Home / 389,881.28-584,704.20-202,790.72

Finding the Fourth Proportional to 389,881.28, 584,704.20 and 202,790.72

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Solution

The fourth proportional to 389,881.28, 584,704.20 and 202,790.72 is: 304,124.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,881.28 : 584,704.20 = 202,790.72 : x
  2. Step 2: Convert to fraction form
    389,881.28/584,704.20 = 202,790.72/x
  3. Step 3: Cross multiply
    389,881.28x = 584,704.20 × 202,790.72
  4. Step 4: Simplify right side
    389,881.28x = 118,572,585,705.02
  5. Step 5: Solve for x
    x = 118,572,585,705.02/389,881.28
  6. Step 6: Final answer
    x = 304,124.85

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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.