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Finding the Fourth Proportional to 229,453.53, 316,643.78 and 127,479.20

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Solution

The fourth proportional to 229,453.53, 316,643.78 and 127,479.20 is: 175,920.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,453.53 : 316,643.78 = 127,479.20 : x
  2. Step 2: Convert to fraction form
    229,453.53/316,643.78 = 127,479.20/x
  3. Step 3: Cross multiply
    229,453.53x = 316,643.78 × 127,479.20
  4. Step 4: Simplify right side
    229,453.53x = 40,365,493,538.76
  5. Step 5: Solve for x
    x = 40,365,493,538.76/229,453.53
  6. Step 6: Final answer
    x = 175,920.12

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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.