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Finding the Fourth Proportional to 243,347.51, 335,816.05 and 135,919.10

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Solution

The fourth proportional to 243,347.51, 335,816.05 and 135,919.10 is: 187,566.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,347.51 : 335,816.05 = 135,919.10 : x
  2. Step 2: Convert to fraction form
    243,347.51/335,816.05 = 135,919.10/x
  3. Step 3: Cross multiply
    243,347.51x = 335,816.05 × 135,919.10
  4. Step 4: Simplify right side
    243,347.51x = 45,643,815,281.56
  5. Step 5: Solve for x
    x = 45,643,815,281.56/243,347.51
  6. Step 6: Final answer
    x = 187,566.40

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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.