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Finding the Fourth Proportional to 256,269.60, 384,404.40 and 98,503.20

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Solution

The fourth proportional to 256,269.60, 384,404.40 and 98,503.20 is: 147,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,269.60 : 384,404.40 = 98,503.20 : x
  2. Step 2: Convert to fraction form
    256,269.60/384,404.40 = 98,503.20/x
  3. Step 3: Cross multiply
    256,269.60x = 384,404.40 × 98,503.20
  4. Step 4: Simplify right side
    256,269.60x = 37,865,063,494.08
  5. Step 5: Solve for x
    x = 37,865,063,494.08/256,269.60
  6. Step 6: Final answer
    x = 147,754.80

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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.