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Finding the Fourth Proportional to 531,117.80, 732,933.30 and 289,402.40

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Solution

The fourth proportional to 531,117.80, 732,933.30 and 289,402.40 is: 399,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,117.80 : 732,933.30 = 289,402.40 : x
  2. Step 2: Convert to fraction form
    531,117.80/732,933.30 = 289,402.40/x
  3. Step 3: Cross multiply
    531,117.80x = 732,933.30 × 289,402.40
  4. Step 4: Simplify right side
    531,117.80x = 212,112,656,059.92
  5. Step 5: Solve for x
    x = 212,112,656,059.92/531,117.80
  6. Step 6: Final answer
    x = 399,370.26

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1.5x scale

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.