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Finding the Fourth Proportional to 247,656.72, 371,435.76 and 121,242.72

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Solution

The fourth proportional to 247,656.72, 371,435.76 and 121,242.72 is: 181,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,656.72 : 371,435.76 = 121,242.72 : x
  2. Step 2: Convert to fraction form
    247,656.72/371,435.76 = 121,242.72/x
  3. Step 3: Cross multiply
    247,656.72x = 371,435.76 × 121,242.72
  4. Step 4: Simplify right side
    247,656.72x = 45,033,881,847.67
  5. Step 5: Solve for x
    x = 45,033,881,847.67/247,656.72
  6. Step 6: Final answer
    x = 181,839.93

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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.