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Finding the Fourth Proportional to 291,666.96, 437,502.28 and 81,306.72

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Solution

The fourth proportional to 291,666.96, 437,502.28 and 81,306.72 is: 121,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,666.96 : 437,502.28 = 81,306.72 : x
  2. Step 2: Convert to fraction form
    291,666.96/437,502.28 = 81,306.72/x
  3. Step 3: Cross multiply
    291,666.96x = 437,502.28 × 81,306.72
  4. Step 4: Simplify right side
    291,666.96x = 35,571,875,379.32
  5. Step 5: Solve for x
    x = 35,571,875,379.32/291,666.96
  6. Step 6: Final answer
    x = 121,960.59

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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.