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Finding the Fourth Proportional to 284,221.20, 426,526.20 and 157,861.20

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Solution

The fourth proportional to 284,221.20, 426,526.20 and 157,861.20 is: 236,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,221.20 : 426,526.20 = 157,861.20 : x
  2. Step 2: Convert to fraction form
    284,221.20/426,526.20 = 157,861.20/x
  3. Step 3: Cross multiply
    284,221.20x = 426,526.20 × 157,861.20
  4. Step 4: Simplify right side
    284,221.20x = 67,331,937,763.44
  5. Step 5: Solve for x
    x = 67,331,937,763.44/284,221.20
  6. Step 6: Final answer
    x = 236,899.77

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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.