Home / 459,087.60-688,631.40-143,641.20

Finding the Fourth Proportional to 459,087.60, 688,631.40 and 143,641.20

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Solution

The fourth proportional to 459,087.60, 688,631.40 and 143,641.20 is: 215,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,087.60 : 688,631.40 = 143,641.20 : x
  2. Step 2: Convert to fraction form
    459,087.60/688,631.40 = 143,641.20/x
  3. Step 3: Cross multiply
    459,087.60x = 688,631.40 × 143,641.20
  4. Step 4: Simplify right side
    459,087.60x = 98,915,840,653.68
  5. Step 5: Solve for x
    x = 98,915,840,653.68/459,087.60
  6. Step 6: Final answer
    x = 215,461.80

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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.