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Finding the Fourth Proportional to 288,800.48, 398,422.63 and 193,337.93

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Solution

The fourth proportional to 288,800.48, 398,422.63 and 193,337.93 is: 266,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,800.48 : 398,422.63 = 193,337.93 : x
  2. Step 2: Convert to fraction form
    288,800.48/398,422.63 = 193,337.93/x
  3. Step 3: Cross multiply
    288,800.48x = 398,422.63 × 193,337.93
  4. Step 4: Simplify right side
    288,800.48x = 77,030,207,062.07
  5. Step 5: Solve for x
    x = 77,030,207,062.07/288,800.48
  6. Step 6: Final answer
    x = 266,724.65

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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.