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Finding the Fourth Proportional to 243,132.05, 335,522.64 and 135,702.06

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Solution

The fourth proportional to 243,132.05, 335,522.64 and 135,702.06 is: 187,269.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,132.05 : 335,522.64 = 135,702.06 : x
  2. Step 2: Convert to fraction form
    243,132.05/335,522.64 = 135,702.06/x
  3. Step 3: Cross multiply
    243,132.05x = 335,522.64 × 135,702.06
  4. Step 4: Simplify right side
    243,132.05x = 45,531,113,424.64
  5. Step 5: Solve for x
    x = 45,531,113,424.64/243,132.05
  6. Step 6: Final answer
    x = 187,269.08

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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.