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Finding the Fourth Proportional to 381,699.60, 572,549.40 and 115,501.20

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Solution

The fourth proportional to 381,699.60, 572,549.40 and 115,501.20 is: 173,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,699.60 : 572,549.40 = 115,501.20 : x
  2. Step 2: Convert to fraction form
    381,699.60/572,549.40 = 115,501.20/x
  3. Step 3: Cross multiply
    381,699.60x = 572,549.40 × 115,501.20
  4. Step 4: Simplify right side
    381,699.60x = 66,130,142,759.28
  5. Step 5: Solve for x
    x = 66,130,142,759.28/381,699.60
  6. Step 6: Final answer
    x = 173,251.80

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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.