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Finding the Fourth Proportional to 459,300.96, 688,964.40 and 126,876.96

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Solution

The fourth proportional to 459,300.96, 688,964.40 and 126,876.96 is: 190,319.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,300.96 : 688,964.40 = 126,876.96 : x
  2. Step 2: Convert to fraction form
    459,300.96/688,964.40 = 126,876.96/x
  3. Step 3: Cross multiply
    459,300.96x = 688,964.40 × 126,876.96
  4. Step 4: Simplify right side
    459,300.96x = 87,413,708,620.22
  5. Step 5: Solve for x
    x = 87,413,708,620.22/459,300.96
  6. Step 6: Final answer
    x = 190,319.02

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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.