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Finding the Fourth Proportional to 338,750.48, 508,147.32 and 89,426

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Solution

The fourth proportional to 338,750.48, 508,147.32 and 89,426 is: 134,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,750.48 : 508,147.32 = 89,426 : x
  2. Step 2: Convert to fraction form
    338,750.48/508,147.32 = 89,426/x
  3. Step 3: Cross multiply
    338,750.48x = 508,147.32 × 89,426
  4. Step 4: Simplify right side
    338,750.48x = 45,441,582,238.32
  5. Step 5: Solve for x
    x = 45,441,582,238.32/338,750.48
  6. Step 6: Final answer
    x = 134,144.70

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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.