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Finding the Fourth Proportional to 202,988.61, 280,115.67 and 112,336.10

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Solution

The fourth proportional to 202,988.61, 280,115.67 and 112,336.10 is: 155,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,988.61 : 280,115.67 = 112,336.10 : x
  2. Step 2: Convert to fraction form
    202,988.61/280,115.67 = 112,336.10/x
  3. Step 3: Cross multiply
    202,988.61x = 280,115.67 × 112,336.10
  4. Step 4: Simplify right side
    202,988.61x = 31,467,101,987.80
  5. Step 5: Solve for x
    x = 31,467,101,987.80/202,988.61
  6. Step 6: Final answer
    x = 155,019.05

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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.