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Finding the Fourth Proportional to 284,269.60, 425,842.80 and 144,128.80

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Solution

The fourth proportional to 284,269.60, 425,842.80 and 144,128.80 is: 215,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,269.60 : 425,842.80 = 144,128.80 : x
  2. Step 2: Convert to fraction form
    284,269.60/425,842.80 = 144,128.80/x
  3. Step 3: Cross multiply
    284,269.60x = 425,842.80 × 144,128.80
  4. Step 4: Simplify right side
    284,269.60x = 61,376,211,752.64
  5. Step 5: Solve for x
    x = 61,376,211,752.64/284,269.60
  6. Step 6: Final answer
    x = 215,908.46

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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.