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Finding the Fourth Proportional to 526,547.10, 789,820.65 and 211,230.30

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Solution

The fourth proportional to 526,547.10, 789,820.65 and 211,230.30 is: 316,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,547.10 : 789,820.65 = 211,230.30 : x
  2. Step 2: Convert to fraction form
    526,547.10/789,820.65 = 211,230.30/x
  3. Step 3: Cross multiply
    526,547.10x = 789,820.65 × 211,230.30
  4. Step 4: Simplify right side
    526,547.10x = 166,834,052,845.70
  5. Step 5: Solve for x
    x = 166,834,052,845.70/526,547.10
  6. Step 6: Final answer
    x = 316,845.45

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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.