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Finding the Fourth Proportional to 265,956.72, 398,701.68 and 108,317.76

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Solution

The fourth proportional to 265,956.72, 398,701.68 and 108,317.76 is: 162,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,956.72 : 398,701.68 = 108,317.76 : x
  2. Step 2: Convert to fraction form
    265,956.72/398,701.68 = 108,317.76/x
  3. Step 3: Cross multiply
    265,956.72x = 398,701.68 × 108,317.76
  4. Step 4: Simplify right side
    265,956.72x = 43,186,472,885.84
  5. Step 5: Solve for x
    x = 43,186,472,885.84/265,956.72
  6. Step 6: Final answer
    x = 162,381.58

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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.