Home / 452,275.20-678,412.80-115,315.20

Finding the Fourth Proportional to 452,275.20, 678,412.80 and 115,315.20

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Solution

The fourth proportional to 452,275.20, 678,412.80 and 115,315.20 is: 172,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,275.20 : 678,412.80 = 115,315.20 : x
  2. Step 2: Convert to fraction form
    452,275.20/678,412.80 = 115,315.20/x
  3. Step 3: Cross multiply
    452,275.20x = 678,412.80 × 115,315.20
  4. Step 4: Simplify right side
    452,275.20x = 78,231,307,714.56
  5. Step 5: Solve for x
    x = 78,231,307,714.56/452,275.20
  6. Step 6: Final answer
    x = 172,972.80

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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.