Home / 307,720.11-424,675.15-171,780.60

Finding the Fourth Proportional to 307,720.11, 424,675.15 and 171,780.60

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Solution

The fourth proportional to 307,720.11, 424,675.15 and 171,780.60 is: 237,069.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,720.11 : 424,675.15 = 171,780.60 : x
  2. Step 2: Convert to fraction form
    307,720.11/424,675.15 = 171,780.60/x
  3. Step 3: Cross multiply
    307,720.11x = 424,675.15 × 171,780.60
  4. Step 4: Simplify right side
    307,720.11x = 72,950,951,812.64
  5. Step 5: Solve for x
    x = 72,950,951,812.64/307,720.11
  6. Step 6: Final answer
    x = 237,069.17

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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.