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Finding the Fourth Proportional to 287,737.20, 431,022.60 and 162,932.40

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Solution

The fourth proportional to 287,737.20, 431,022.60 and 162,932.40 is: 244,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,737.20 : 431,022.60 = 162,932.40 : x
  2. Step 2: Convert to fraction form
    287,737.20/431,022.60 = 162,932.40/x
  3. Step 3: Cross multiply
    287,737.20x = 431,022.60 × 162,932.40
  4. Step 4: Simplify right side
    287,737.20x = 70,227,546,672.24
  5. Step 5: Solve for x
    x = 70,227,546,672.24/287,737.20
  6. Step 6: Final answer
    x = 244,068.36

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1.5x scale

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.