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Finding the Fourth Proportional to 284,157.60, 392,126.24 and 163,318.56

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Solution

The fourth proportional to 284,157.60, 392,126.24 and 163,318.56 is: 225,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,157.60 : 392,126.24 = 163,318.56 : x
  2. Step 2: Convert to fraction form
    284,157.60/392,126.24 = 163,318.56/x
  3. Step 3: Cross multiply
    284,157.60x = 392,126.24 × 163,318.56
  4. Step 4: Simplify right side
    284,157.60x = 64,041,492,855.01
  5. Step 5: Solve for x
    x = 64,041,492,855.01/284,157.60
  6. Step 6: Final answer
    x = 225,373.15

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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.