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Finding the Fourth Proportional to 285,313.83, 393,732.84 and 157,989.42

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Solution

The fourth proportional to 285,313.83, 393,732.84 and 157,989.42 is: 218,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,313.83 : 393,732.84 = 157,989.42 : x
  2. Step 2: Convert to fraction form
    285,313.83/393,732.84 = 157,989.42/x
  3. Step 3: Cross multiply
    285,313.83x = 393,732.84 × 157,989.42
  4. Step 4: Simplify right side
    285,313.83x = 62,205,623,026.55
  5. Step 5: Solve for x
    x = 62,205,623,026.55/285,313.83
  6. Step 6: Final answer
    x = 218,025.26

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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.