Home / 513,333.20-769,999.80-139,356.20

Finding the Fourth Proportional to 513,333.20, 769,999.80 and 139,356.20

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Solution

The fourth proportional to 513,333.20, 769,999.80 and 139,356.20 is: 209,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,333.20 : 769,999.80 = 139,356.20 : x
  2. Step 2: Convert to fraction form
    513,333.20/769,999.80 = 139,356.20/x
  3. Step 3: Cross multiply
    513,333.20x = 769,999.80 × 139,356.20
  4. Step 4: Simplify right side
    513,333.20x = 107,304,242,278.76
  5. Step 5: Solve for x
    x = 107,304,242,278.76/513,333.20
  6. Step 6: Final answer
    x = 209,034.29

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1.5x scale

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.