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Finding the Fourth Proportional to 243,560.64, 336,112.64 and 136,130.72

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Solution

The fourth proportional to 243,560.64, 336,112.64 and 136,130.72 is: 187,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,560.64 : 336,112.64 = 136,130.72 : x
  2. Step 2: Convert to fraction form
    243,560.64/336,112.64 = 136,130.72/x
  3. Step 3: Cross multiply
    243,560.64x = 336,112.64 × 136,130.72
  4. Step 4: Simplify right side
    243,560.64x = 45,755,255,684.30
  5. Step 5: Solve for x
    x = 45,755,255,684.30/243,560.64
  6. Step 6: Final answer
    x = 187,859.81

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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.