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Finding the Fourth Proportional to 247,386.78, 341,393.88 and 134,209.50

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Solution

The fourth proportional to 247,386.78, 341,393.88 and 134,209.50 is: 185,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,386.78 : 341,393.88 = 134,209.50 : x
  2. Step 2: Convert to fraction form
    247,386.78/341,393.88 = 134,209.50/x
  3. Step 3: Cross multiply
    247,386.78x = 341,393.88 × 134,209.50
  4. Step 4: Simplify right side
    247,386.78x = 45,818,301,937.86
  5. Step 5: Solve for x
    x = 45,818,301,937.86/247,386.78
  6. Step 6: Final answer
    x = 185,209.18

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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.