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Finding the Fourth Proportional to 243,097.16, 335,490.90 and 135,688.16

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Solution

The fourth proportional to 243,097.16, 335,490.90 and 135,688.16 is: 187,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,097.16 : 335,490.90 = 135,688.16 : x
  2. Step 2: Convert to fraction form
    243,097.16/335,490.90 = 135,688.16/x
  3. Step 3: Cross multiply
    243,097.16x = 335,490.90 × 135,688.16
  4. Step 4: Simplify right side
    243,097.16x = 45,522,142,917.74
  5. Step 5: Solve for x
    x = 45,522,142,917.74/243,097.16
  6. Step 6: Final answer
    x = 187,259.05

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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.