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Finding the Fourth Proportional to 628,774.84, 943,162.20 and 155,464.30

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Solution

The fourth proportional to 628,774.84, 943,162.20 and 155,464.30 is: 233,196.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,774.84 : 943,162.20 = 155,464.30 : x
  2. Step 2: Convert to fraction form
    628,774.84/943,162.20 = 155,464.30/x
  3. Step 3: Cross multiply
    628,774.84x = 943,162.20 × 155,464.30
  4. Step 4: Simplify right side
    628,774.84x = 146,628,051,209.46
  5. Step 5: Solve for x
    x = 146,628,051,209.46/628,774.84
  6. Step 6: Final answer
    x = 233,196.44

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.