Home / 458,890.32-688,432.71-143,371.02

Finding the Fourth Proportional to 458,890.32, 688,432.71 and 143,371.02

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Solution

The fourth proportional to 458,890.32, 688,432.71 and 143,371.02 is: 215,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,890.32 : 688,432.71 = 143,371.02 : x
  2. Step 2: Convert to fraction form
    458,890.32/688,432.71 = 143,371.02/x
  3. Step 3: Cross multiply
    458,890.32x = 688,432.71 × 143,371.02
  4. Step 4: Simplify right side
    458,890.32x = 98,701,299,834.06
  5. Step 5: Solve for x
    x = 98,701,299,834.06/458,890.32
  6. Step 6: Final answer
    x = 215,086.91

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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.