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Finding the Fourth Proportional to 288,693.18, 398,424.15 and 167,823.90

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Solution

The fourth proportional to 288,693.18, 398,424.15 and 167,823.90 is: 231,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,693.18 : 398,424.15 = 167,823.90 : x
  2. Step 2: Convert to fraction form
    288,693.18/398,424.15 = 167,823.90/x
  3. Step 3: Cross multiply
    288,693.18x = 398,424.15 × 167,823.90
  4. Step 4: Simplify right side
    288,693.18x = 66,865,094,707.19
  5. Step 5: Solve for x
    x = 66,865,094,707.19/288,693.18
  6. Step 6: Final answer
    x = 231,613.00

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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.