Home / 309,918.95-427,655.28-173,967.85

Finding the Fourth Proportional to 309,918.95, 427,655.28 and 173,967.85

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Solution

The fourth proportional to 309,918.95, 427,655.28 and 173,967.85 is: 240,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,918.95 : 427,655.28 = 173,967.85 : x
  2. Step 2: Convert to fraction form
    309,918.95/427,655.28 = 173,967.85/x
  3. Step 3: Cross multiply
    309,918.95x = 427,655.28 × 173,967.85
  4. Step 4: Simplify right side
    309,918.95x = 74,398,270,545.05
  5. Step 5: Solve for x
    x = 74,398,270,545.05/309,918.95
  6. Step 6: Final answer
    x = 240,057.19

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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.