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Finding the Fourth Proportional to 628,775.84, 943,163.70 and 155,465.30

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Solution

The fourth proportional to 628,775.84, 943,163.70 and 155,465.30 is: 233,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,775.84 : 943,163.70 = 155,465.30 : x
  2. Step 2: Convert to fraction form
    628,775.84/943,163.70 = 155,465.30/x
  3. Step 3: Cross multiply
    628,775.84x = 943,163.70 × 155,465.30
  4. Step 4: Simplify right side
    628,775.84x = 146,629,227,569.61
  5. Step 5: Solve for x
    x = 146,629,227,569.61/628,775.84
  6. Step 6: Final answer
    x = 233,197.94

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Similar ratio
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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.