Home / 343,875.15-515,816.10-103,990.95

Finding the Fourth Proportional to 343,875.15, 515,816.10 and 103,990.95

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Solution

The fourth proportional to 343,875.15, 515,816.10 and 103,990.95 is: 155,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,875.15 : 515,816.10 = 103,990.95 : x
  2. Step 2: Convert to fraction form
    343,875.15/515,816.10 = 103,990.95/x
  3. Step 3: Cross multiply
    343,875.15x = 515,816.10 × 103,990.95
  4. Step 4: Simplify right side
    343,875.15x = 53,640,206,264.30
  5. Step 5: Solve for x
    x = 53,640,206,264.30/343,875.15
  6. Step 6: Final answer
    x = 155,987.45

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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.