Home / 389,943.13-584,914.70-140,625.13

Finding the Fourth Proportional to 389,943.13, 584,914.70 and 140,625.13

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Solution

The fourth proportional to 389,943.13, 584,914.70 and 140,625.13 is: 210,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,943.13 : 584,914.70 = 140,625.13 : x
  2. Step 2: Convert to fraction form
    389,943.13/584,914.70 = 140,625.13/x
  3. Step 3: Cross multiply
    389,943.13x = 584,914.70 × 140,625.13
  4. Step 4: Simplify right side
    389,943.13x = 82,253,705,726.41
  5. Step 5: Solve for x
    x = 82,253,705,726.41/389,943.13
  6. Step 6: Final answer
    x = 210,937.70

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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.