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Finding the Fourth Proportional to 243,985.66, 336,691.13 and 135,087.84

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Solution

The fourth proportional to 243,985.66, 336,691.13 and 135,087.84 is: 186,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,985.66 : 336,691.13 = 135,087.84 : x
  2. Step 2: Convert to fraction form
    243,985.66/336,691.13 = 135,087.84/x
  3. Step 3: Cross multiply
    243,985.66x = 336,691.13 × 135,087.84
  4. Step 4: Simplify right side
    243,985.66x = 45,482,878,280.36
  5. Step 5: Solve for x
    x = 45,482,878,280.36/243,985.66
  6. Step 6: Final answer
    x = 186,416.19

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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.