Home / 254,985,428.70-382,478,143.05-82,479,680.10

Finding the Fourth Proportional to 254,985,428.70, 382,478,143.05 and 82,479,680.10

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Solution

The fourth proportional to 254,985,428.70, 382,478,143.05 and 82,479,680.10 is: 123,719,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,985,428.70 : 382,478,143.05 = 82,479,680.10 : x
  2. Step 2: Convert to fraction form
    254,985,428.70/382,478,143.05 = 82,479,680.10/x
  3. Step 3: Cross multiply
    254,985,428.70x = 382,478,143.05 × 82,479,680.10
  4. Step 4: Simplify right side
    254,985,428.70x = 31,546,674,884,006,036
  5. Step 5: Solve for x
    x = 31,546,674,884,006,036/254,985,428.70
  6. Step 6: Final answer
    x = 123,719,520.15

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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.