Home / 520,353.30-780,470.33-136,139.25

Finding the Fourth Proportional to 520,353.30, 780,470.33 and 136,139.25

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Solution

The fourth proportional to 520,353.30, 780,470.33 and 136,139.25 is: 204,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,353.30 : 780,470.33 = 136,139.25 : x
  2. Step 2: Convert to fraction form
    520,353.30/780,470.33 = 136,139.25/x
  3. Step 3: Cross multiply
    520,353.30x = 780,470.33 × 136,139.25
  4. Step 4: Simplify right side
    520,353.30x = 106,252,645,373.45
  5. Step 5: Solve for x
    x = 106,252,645,373.45/520,353.30
  6. Step 6: Final answer
    x = 204,193.28

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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.