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Finding the Fourth Proportional to 243,548.78, 336,068.16 and 134,638.40

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Solution

The fourth proportional to 243,548.78, 336,068.16 and 134,638.40 is: 185,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,548.78 : 336,068.16 = 134,638.40 : x
  2. Step 2: Convert to fraction form
    243,548.78/336,068.16 = 134,638.40/x
  3. Step 3: Cross multiply
    243,548.78x = 336,068.16 × 134,638.40
  4. Step 4: Simplify right side
    243,548.78x = 45,247,679,353.34
  5. Step 5: Solve for x
    x = 45,247,679,353.34/243,548.78
  6. Step 6: Final answer
    x = 185,784.87

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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.