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Finding the Fourth Proportional to 487,227.40, 731,618.70 and 355,035.40

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Solution

The fourth proportional to 487,227.40, 731,618.70 and 355,035.40 is: 533,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,227.40 : 731,618.70 = 355,035.40 : x
  2. Step 2: Convert to fraction form
    487,227.40/731,618.70 = 355,035.40/x
  3. Step 3: Cross multiply
    487,227.40x = 731,618.70 × 355,035.40
  4. Step 4: Simplify right side
    487,227.40x = 259,750,537,801.98
  5. Step 5: Solve for x
    x = 259,750,537,801.98/487,227.40
  6. Step 6: Final answer
    x = 533,119.73

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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.