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Finding the Fourth Proportional to 247,289.28, 341,277.53 and 138,404.51

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Solution

The fourth proportional to 247,289.28, 341,277.53 and 138,404.51 is: 191,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,289.28 : 341,277.53 = 138,404.51 : x
  2. Step 2: Convert to fraction form
    247,289.28/341,277.53 = 138,404.51/x
  3. Step 3: Cross multiply
    247,289.28x = 341,277.53 × 138,404.51
  4. Step 4: Simplify right side
    247,289.28x = 47,234,346,915.25
  5. Step 5: Solve for x
    x = 47,234,346,915.25/247,289.28
  6. Step 6: Final answer
    x = 191,008.47

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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.