Home / 285,405,759.90-428,108,639.85-149,073,428.70

Finding the Fourth Proportional to 285,405,759.90, 428,108,639.85 and 149,073,428.70

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Solution

The fourth proportional to 285,405,759.90, 428,108,639.85 and 149,073,428.70 is: 223,610,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,405,759.90 : 428,108,639.85 = 149,073,428.70 : x
  2. Step 2: Convert to fraction form
    285,405,759.90/428,108,639.85 = 149,073,428.70/x
  3. Step 3: Cross multiply
    285,405,759.90x = 428,108,639.85 × 149,073,428.70
  4. Step 4: Simplify right side
    285,405,759.90x = 63,819,622,798,532,952
  5. Step 5: Solve for x
    x = 63,819,622,798,532,952/285,405,759.90
  6. Step 6: Final answer
    x = 223,610,143.05

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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.