Home / 385,201.55-577,689.33-145,142.26

Finding the Fourth Proportional to 385,201.55, 577,689.33 and 145,142.26

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Solution

The fourth proportional to 385,201.55, 577,689.33 and 145,142.26 is: 217,670.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,201.55 : 577,689.33 = 145,142.26 : x
  2. Step 2: Convert to fraction form
    385,201.55/577,689.33 = 145,142.26/x
  3. Step 3: Cross multiply
    385,201.55x = 577,689.33 × 145,142.26
  4. Step 4: Simplify right side
    385,201.55x = 83,847,134,934.09
  5. Step 5: Solve for x
    x = 83,847,134,934.09/385,201.55
  6. Step 6: Final answer
    x = 217,670.81

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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.