Home / 459,122.88-688,696.62-143,579.78

Finding the Fourth Proportional to 459,122.88, 688,696.62 and 143,579.78

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Solution

The fourth proportional to 459,122.88, 688,696.62 and 143,579.78 is: 215,373.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,122.88 : 688,696.62 = 143,579.78 : x
  2. Step 2: Convert to fraction form
    459,122.88/688,696.62 = 143,579.78/x
  3. Step 3: Cross multiply
    459,122.88x = 688,696.62 × 143,579.78
  4. Step 4: Simplify right side
    459,122.88x = 98,882,909,186.34
  5. Step 5: Solve for x
    x = 98,882,909,186.34/459,122.88
  6. Step 6: Final answer
    x = 215,373.52

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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.