Home / 410,839.80-616,307.70-130,385.40

Finding the Fourth Proportional to 410,839.80, 616,307.70 and 130,385.40

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Solution

The fourth proportional to 410,839.80, 616,307.70 and 130,385.40 is: 195,593.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,839.80 : 616,307.70 = 130,385.40 : x
  2. Step 2: Convert to fraction form
    410,839.80/616,307.70 = 130,385.40/x
  3. Step 3: Cross multiply
    410,839.80x = 616,307.70 × 130,385.40
  4. Step 4: Simplify right side
    410,839.80x = 80,357,525,987.58
  5. Step 5: Solve for x
    x = 80,357,525,987.58/410,839.80
  6. Step 6: Final answer
    x = 195,593.33

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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.