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Finding the Fourth Proportional to 243,432.78, 335,879.66 and 141,397.61

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Solution

The fourth proportional to 243,432.78, 335,879.66 and 141,397.61 is: 195,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,432.78 : 335,879.66 = 141,397.61 : x
  2. Step 2: Convert to fraction form
    243,432.78/335,879.66 = 141,397.61/x
  3. Step 3: Cross multiply
    243,432.78x = 335,879.66 × 141,397.61
  4. Step 4: Simplify right side
    243,432.78x = 47,492,578,785.23
  5. Step 5: Solve for x
    x = 47,492,578,785.23/243,432.78
  6. Step 6: Final answer
    x = 195,095.25

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1.5x scale

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.