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Finding the Fourth Proportional to 243,995.38, 336,713.55 and 136,565.40

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Solution

The fourth proportional to 243,995.38, 336,713.55 and 136,565.40 is: 188,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,995.38 : 336,713.55 = 136,565.40 : x
  2. Step 2: Convert to fraction form
    243,995.38/336,713.55 = 136,565.40/x
  3. Step 3: Cross multiply
    243,995.38x = 336,713.55 × 136,565.40
  4. Step 4: Simplify right side
    243,995.38x = 45,983,420,641.17
  5. Step 5: Solve for x
    x = 45,983,420,641.17/243,995.38
  6. Step 6: Final answer
    x = 188,460.21

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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.