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Finding the Fourth Proportional to 531,088.40, 732,892.73 and 289,372.97

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Solution

The fourth proportional to 531,088.40, 732,892.73 and 289,372.97 is: 399,329.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,088.40 : 732,892.73 = 289,372.97 : x
  2. Step 2: Convert to fraction form
    531,088.40/732,892.73 = 289,372.97/x
  3. Step 3: Cross multiply
    531,088.40x = 732,892.73 × 289,372.97
  4. Step 4: Simplify right side
    531,088.40x = 212,079,345,971.51
  5. Step 5: Solve for x
    x = 212,079,345,971.51/531,088.40
  6. Step 6: Final answer
    x = 399,329.65

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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.