Home / 459,007.20-688,511.36-143,465.76

Finding the Fourth Proportional to 459,007.20, 688,511.36 and 143,465.76

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Solution

The fourth proportional to 459,007.20, 688,511.36 and 143,465.76 is: 215,198.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,007.20 : 688,511.36 = 143,465.76 : x
  2. Step 2: Convert to fraction form
    459,007.20/688,511.36 = 143,465.76/x
  3. Step 3: Cross multiply
    459,007.20x = 688,511.36 × 143,465.76
  4. Step 4: Simplify right side
    459,007.20x = 98,777,805,531.03
  5. Step 5: Solve for x
    x = 98,777,805,531.03/459,007.20
  6. Step 6: Final answer
    x = 215,198.82

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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.