Home / 459,007.20-688,575.60-143,431.20

Finding the Fourth Proportional to 459,007.20, 688,575.60 and 143,431.20

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Solution

The fourth proportional to 459,007.20, 688,575.60 and 143,431.20 is: 215,167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,007.20 : 688,575.60 = 143,431.20 : x
  2. Step 2: Convert to fraction form
    459,007.20/688,575.60 = 143,431.20/x
  3. Step 3: Cross multiply
    459,007.20x = 688,575.60 × 143,431.20
  4. Step 4: Simplify right side
    459,007.20x = 98,763,224,598.72
  5. Step 5: Solve for x
    x = 98,763,224,598.72/459,007.20
  6. Step 6: Final answer
    x = 215,167.05

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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.