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Finding the Fourth Proportional to 281,791.70, 423,062.85 and 163,547.90

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Solution

The fourth proportional to 281,791.70, 423,062.85 and 163,547.90 is: 245,539.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,791.70 : 423,062.85 = 163,547.90 : x
  2. Step 2: Convert to fraction form
    281,791.70/423,062.85 = 163,547.90/x
  3. Step 3: Cross multiply
    281,791.70x = 423,062.85 × 163,547.90
  4. Step 4: Simplify right side
    281,791.70x = 69,191,040,685.52
  5. Step 5: Solve for x
    x = 69,191,040,685.52/281,791.70
  6. Step 6: Final answer
    x = 245,539.67

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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.