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Finding the Fourth Proportional to 243,486.42, 336,004.88 and 136,057.20

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Solution

The fourth proportional to 243,486.42, 336,004.88 and 136,057.20 is: 187,755.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,486.42 : 336,004.88 = 136,057.20 : x
  2. Step 2: Convert to fraction form
    243,486.42/336,004.88 = 136,057.20/x
  3. Step 3: Cross multiply
    243,486.42x = 336,004.88 × 136,057.20
  4. Step 4: Simplify right side
    243,486.42x = 45,715,883,159.14
  5. Step 5: Solve for x
    x = 45,715,883,159.14/243,486.42
  6. Step 6: Final answer
    x = 187,755.37

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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.