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Finding the Fourth Proportional to 243,075.65, 335,443.88 and 135,639.27

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Solution

The fourth proportional to 243,075.65, 335,443.88 and 135,639.27 is: 187,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,075.65 : 335,443.88 = 135,639.27 : x
  2. Step 2: Convert to fraction form
    243,075.65/335,443.88 = 135,639.27/x
  3. Step 3: Cross multiply
    243,075.65x = 335,443.88 × 135,639.27
  4. Step 4: Simplify right side
    243,075.65x = 45,499,363,348.27
  5. Step 5: Solve for x
    x = 45,499,363,348.27/243,075.65
  6. Step 6: Final answer
    x = 187,181.91

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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.