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Finding the Fourth Proportional to 238,487.34, 357,709.14 and 80,697.72

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Solution

The fourth proportional to 238,487.34, 357,709.14 and 80,697.72 is: 121,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,487.34 : 357,709.14 = 80,697.72 : x
  2. Step 2: Convert to fraction form
    238,487.34/357,709.14 = 80,697.72/x
  3. Step 3: Cross multiply
    238,487.34x = 357,709.14 × 80,697.72
  4. Step 4: Simplify right side
    238,487.34x = 28,866,312,021.16
  5. Step 5: Solve for x
    x = 28,866,312,021.16/238,487.34
  6. Step 6: Final answer
    x = 121,039.18

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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.