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Finding the Fourth Proportional to 243,337.20, 365,005.78 and 77,125.20

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Solution

The fourth proportional to 243,337.20, 365,005.78 and 77,125.20 is: 115,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,337.20 : 365,005.78 = 77,125.20 : x
  2. Step 2: Convert to fraction form
    243,337.20/365,005.78 = 77,125.20/x
  3. Step 3: Cross multiply
    243,337.20x = 365,005.78 × 77,125.20
  4. Step 4: Simplify right side
    243,337.20x = 28,151,143,783.66
  5. Step 5: Solve for x
    x = 28,151,143,783.66/243,337.20
  6. Step 6: Final answer
    x = 115,687.79

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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.