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Finding the Fourth Proportional to 247,765.40, 341,925.64 and 138,871.74

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Solution

The fourth proportional to 247,765.40, 341,925.64 and 138,871.74 is: 191,648.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,765.40 : 341,925.64 = 138,871.74 : x
  2. Step 2: Convert to fraction form
    247,765.40/341,925.64 = 138,871.74/x
  3. Step 3: Cross multiply
    247,765.40x = 341,925.64 × 138,871.74
  4. Step 4: Simplify right side
    247,765.40x = 47,483,808,577.41
  5. Step 5: Solve for x
    x = 47,483,808,577.41/247,765.40
  6. Step 6: Final answer
    x = 191,648.26

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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.