Home / 458,966.37-688,449.45-143,423.28

Finding the Fourth Proportional to 458,966.37, 688,449.45 and 143,423.28

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Solution

The fourth proportional to 458,966.37, 688,449.45 and 143,423.28 is: 215,134.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,966.37 : 688,449.45 = 143,423.28 : x
  2. Step 2: Convert to fraction form
    458,966.37/688,449.45 = 143,423.28/x
  3. Step 3: Cross multiply
    458,966.37x = 688,449.45 × 143,423.28
  4. Step 4: Simplify right side
    458,966.37x = 98,739,678,233.20
  5. Step 5: Solve for x
    x = 98,739,678,233.20/458,966.37
  6. Step 6: Final answer
    x = 215,134.89

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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.