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Finding the Fourth Proportional to 316,793.62, 476,538.92 and 287,165.15

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Solution

The fourth proportional to 316,793.62, 476,538.92 and 287,165.15 is: 431,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,793.62 : 476,538.92 = 287,165.15 : x
  2. Step 2: Convert to fraction form
    316,793.62/476,538.92 = 287,165.15/x
  3. Step 3: Cross multiply
    316,793.62x = 476,538.92 × 287,165.15
  4. Step 4: Simplify right side
    316,793.62x = 136,845,370,442.64
  5. Step 5: Solve for x
    x = 136,845,370,442.64/316,793.62
  6. Step 6: Final answer
    x = 431,970.10

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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.