Home / 459,003.20-688,505.36-143,461.76

Finding the Fourth Proportional to 459,003.20, 688,505.36 and 143,461.76

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Solution

The fourth proportional to 459,003.20, 688,505.36 and 143,461.76 is: 215,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,003.20 : 688,505.36 = 143,461.76 : x
  2. Step 2: Convert to fraction form
    459,003.20/688,505.36 = 143,461.76/x
  3. Step 3: Cross multiply
    459,003.20x = 688,505.36 × 143,461.76
  4. Step 4: Simplify right side
    459,003.20x = 98,774,190,715.03
  5. Step 5: Solve for x
    x = 98,774,190,715.03/459,003.20
  6. Step 6: Final answer
    x = 215,192.82

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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.