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Finding the Fourth Proportional to 459,315.96, 688,986.90 and 126,891.96

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Solution

The fourth proportional to 459,315.96, 688,986.90 and 126,891.96 is: 190,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,315.96 : 688,986.90 = 126,891.96 : x
  2. Step 2: Convert to fraction form
    459,315.96/688,986.90 = 126,891.96/x
  3. Step 3: Cross multiply
    459,315.96x = 688,986.90 × 126,891.96
  4. Step 4: Simplify right side
    459,315.96x = 87,426,898,155.32
  5. Step 5: Solve for x
    x = 87,426,898,155.32/459,315.96
  6. Step 6: Final answer
    x = 190,341.52

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Similar ratio
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1.5x scale

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.