Home / 347,789.12-521,683.36-98,471.20

Finding the Fourth Proportional to 347,789.12, 521,683.36 and 98,471.20

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Solution

The fourth proportional to 347,789.12, 521,683.36 and 98,471.20 is: 147,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,789.12 : 521,683.36 = 98,471.20 : x
  2. Step 2: Convert to fraction form
    347,789.12/521,683.36 = 98,471.20/x
  3. Step 3: Cross multiply
    347,789.12x = 521,683.36 × 98,471.20
  4. Step 4: Simplify right side
    347,789.12x = 51,370,786,479.23
  5. Step 5: Solve for x
    x = 51,370,786,479.23/347,789.12
  6. Step 6: Final answer
    x = 147,706.71

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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.