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Finding the Fourth Proportional to 531,088.80, 732,893.28 and 289,373.40

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Solution

The fourth proportional to 531,088.80, 732,893.28 and 289,373.40 is: 399,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,088.80 : 732,893.28 = 289,373.40 : x
  2. Step 2: Convert to fraction form
    531,088.80/732,893.28 = 289,373.40/x
  3. Step 3: Cross multiply
    531,088.80x = 732,893.28 × 289,373.40
  4. Step 4: Simplify right side
    531,088.80x = 212,079,820,270.75
  5. Step 5: Solve for x
    x = 212,079,820,270.75/531,088.80
  6. Step 6: Final answer
    x = 399,330.24

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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.