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Finding the Fourth Proportional to 531,666.60, 733,285.20 and 340,697.76

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Solution

The fourth proportional to 531,666.60, 733,285.20 and 340,697.76 is: 469,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,666.60 : 733,285.20 = 340,697.76 : x
  2. Step 2: Convert to fraction form
    531,666.60/733,285.20 = 340,697.76/x
  3. Step 3: Cross multiply
    531,666.60x = 733,285.20 × 340,697.76
  4. Step 4: Simplify right side
    531,666.60x = 249,828,625,081.15
  5. Step 5: Solve for x
    x = 249,828,625,081.15/531,666.60
  6. Step 6: Final answer
    x = 469,897.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.