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Finding the Fourth Proportional to 229,354.14, 316,509.03 and 128,752.86

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Solution

The fourth proportional to 229,354.14, 316,509.03 and 128,752.86 is: 177,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,354.14 : 316,509.03 = 128,752.86 : x
  2. Step 2: Convert to fraction form
    229,354.14/316,509.03 = 128,752.86/x
  3. Step 3: Cross multiply
    229,354.14x = 316,509.03 × 128,752.86
  4. Step 4: Simplify right side
    229,354.14x = 40,751,442,828.33
  5. Step 5: Solve for x
    x = 40,751,442,828.33/229,354.14
  6. Step 6: Final answer
    x = 177,679.12

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1.5x scale

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.