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Finding the Fourth Proportional to 285,008.01, 393,300.23 and 157,688.97

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Solution

The fourth proportional to 285,008.01, 393,300.23 and 157,688.97 is: 217,604.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,008.01 : 393,300.23 = 157,688.97 : x
  2. Step 2: Convert to fraction form
    285,008.01/393,300.23 = 157,688.97/x
  3. Step 3: Cross multiply
    285,008.01x = 393,300.23 × 157,688.97
  4. Step 4: Simplify right side
    285,008.01x = 62,019,107,381.02
  5. Step 5: Solve for x
    x = 62,019,107,381.02/285,008.01
  6. Step 6: Final answer
    x = 217,604.79

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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.