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Finding the Fourth Proportional to 243,931.60, 365,900.13 and 86,049.33

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Solution

The fourth proportional to 243,931.60, 365,900.13 and 86,049.33 is: 129,074.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,931.60 : 365,900.13 = 86,049.33 : x
  2. Step 2: Convert to fraction form
    243,931.60/365,900.13 = 86,049.33/x
  3. Step 3: Cross multiply
    243,931.60x = 365,900.13 × 86,049.33
  4. Step 4: Simplify right side
    243,931.60x = 31,485,460,603.17
  5. Step 5: Solve for x
    x = 31,485,460,603.17/243,931.60
  6. Step 6: Final answer
    x = 129,074.96

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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.