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Finding the Fourth Proportional to 287,892.99, 397,278.46 and 157,062.86

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Solution

The fourth proportional to 287,892.99, 397,278.46 and 157,062.86 is: 216,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,892.99 : 397,278.46 = 157,062.86 : x
  2. Step 2: Convert to fraction form
    287,892.99/397,278.46 = 157,062.86/x
  3. Step 3: Cross multiply
    287,892.99x = 397,278.46 × 157,062.86
  4. Step 4: Simplify right side
    287,892.99x = 62,397,690,168.12
  5. Step 5: Solve for x
    x = 62,397,690,168.12/287,892.99
  6. Step 6: Final answer
    x = 216,739.18

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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.