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Finding the Fourth Proportional to 243,111.65, 335,510.91 and 135,702.68

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Solution

The fourth proportional to 243,111.65, 335,510.91 and 135,702.68 is: 187,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,111.65 : 335,510.91 = 135,702.68 : x
  2. Step 2: Convert to fraction form
    243,111.65/335,510.91 = 135,702.68/x
  3. Step 3: Cross multiply
    243,111.65x = 335,510.91 × 135,702.68
  4. Step 4: Simplify right side
    243,111.65x = 45,529,727,978.68
  5. Step 5: Solve for x
    x = 45,529,727,978.68/243,111.65
  6. Step 6: Final answer
    x = 187,279.09

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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.