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Finding the Fourth Proportional to 298,117.70, 447,022.67 and 87,728.34

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Solution

The fourth proportional to 298,117.70, 447,022.67 and 87,728.34 is: 131,547.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,117.70 : 447,022.67 = 87,728.34 : x
  2. Step 2: Convert to fraction form
    298,117.70/447,022.67 = 87,728.34/x
  3. Step 3: Cross multiply
    298,117.70x = 447,022.67 × 87,728.34
  4. Step 4: Simplify right side
    298,117.70x = 39,216,556,781.47
  5. Step 5: Solve for x
    x = 39,216,556,781.47/298,117.70
  6. Step 6: Final answer
    x = 131,547.23

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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.