Home / 272,519.10-408,730.05-172,500.30

Finding the Fourth Proportional to 272,519.10, 408,730.05 and 172,500.30

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Solution

The fourth proportional to 272,519.10, 408,730.05 and 172,500.30 is: 258,719.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,519.10 : 408,730.05 = 172,500.30 : x
  2. Step 2: Convert to fraction form
    272,519.10/408,730.05 = 172,500.30/x
  3. Step 3: Cross multiply
    272,519.10x = 408,730.05 × 172,500.30
  4. Step 4: Simplify right side
    272,519.10x = 70,506,056,244.02
  5. Step 5: Solve for x
    x = 70,506,056,244.02/272,519.10
  6. Step 6: Final answer
    x = 258,719.69

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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.