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Finding the Fourth Proportional to 231,347.60, 319,260.55 and 134,574.68

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Solution

The fourth proportional to 231,347.60, 319,260.55 and 134,574.68 is: 185,713.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,347.60 : 319,260.55 = 134,574.68 : x
  2. Step 2: Convert to fraction form
    231,347.60/319,260.55 = 134,574.68/x
  3. Step 3: Cross multiply
    231,347.60x = 319,260.55 × 134,574.68
  4. Step 4: Simplify right side
    231,347.60x = 42,964,386,352.87
  5. Step 5: Solve for x
    x = 42,964,386,352.87/231,347.60
  6. Step 6: Final answer
    x = 185,713.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.