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Finding the Fourth Proportional to 229,511.04, 316,754.88 and 128,909.04

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Solution

The fourth proportional to 229,511.04, 316,754.88 and 128,909.04 is: 177,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,511.04 : 316,754.88 = 128,909.04 : x
  2. Step 2: Convert to fraction form
    229,511.04/316,754.88 = 128,909.04/x
  3. Step 3: Cross multiply
    229,511.04x = 316,754.88 × 128,909.04
  4. Step 4: Simplify right side
    229,511.04x = 40,832,567,496.12
  5. Step 5: Solve for x
    x = 40,832,567,496.12/229,511.04
  6. Step 6: Final answer
    x = 177,911.13

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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.