Home / 309,614.02-427,272.24-173,678.20

Finding the Fourth Proportional to 309,614.02, 427,272.24 and 173,678.20

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Solution

The fourth proportional to 309,614.02, 427,272.24 and 173,678.20 is: 239,678.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,614.02 : 427,272.24 = 173,678.20 : x
  2. Step 2: Convert to fraction form
    309,614.02/427,272.24 = 173,678.20/x
  3. Step 3: Cross multiply
    309,614.02x = 427,272.24 × 173,678.20
  4. Step 4: Simplify right side
    309,614.02x = 74,207,873,553.17
  5. Step 5: Solve for x
    x = 74,207,873,553.17/309,614.02
  6. Step 6: Final answer
    x = 239,678.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.