Home / 411,384.20-617,076.30-130,929.80

Finding the Fourth Proportional to 411,384.20, 617,076.30 and 130,929.80

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Solution

The fourth proportional to 411,384.20, 617,076.30 and 130,929.80 is: 196,394.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,384.20 : 617,076.30 = 130,929.80 : x
  2. Step 2: Convert to fraction form
    411,384.20/617,076.30 = 130,929.80/x
  3. Step 3: Cross multiply
    411,384.20x = 617,076.30 × 130,929.80
  4. Step 4: Simplify right side
    411,384.20x = 80,793,676,543.74
  5. Step 5: Solve for x
    x = 80,793,676,543.74/411,384.20
  6. Step 6: Final answer
    x = 196,394.70

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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.