Home / 459,002.40-688,503.60-143,491.20

Finding the Fourth Proportional to 459,002.40, 688,503.60 and 143,491.20

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Solution

The fourth proportional to 459,002.40, 688,503.60 and 143,491.20 is: 215,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,002.40 : 688,503.60 = 143,491.20 : x
  2. Step 2: Convert to fraction form
    459,002.40/688,503.60 = 143,491.20/x
  3. Step 3: Cross multiply
    459,002.40x = 688,503.60 × 143,491.20
  4. Step 4: Simplify right side
    459,002.40x = 98,794,207,768.32
  5. Step 5: Solve for x
    x = 98,794,207,768.32/459,002.40
  6. Step 6: Final answer
    x = 215,236.80

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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.