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Finding the Fourth Proportional to 202,990.62, 280,127.59 and 112,352.84

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Solution

The fourth proportional to 202,990.62, 280,127.59 and 112,352.84 is: 155,047.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,990.62 : 280,127.59 = 112,352.84 : x
  2. Step 2: Convert to fraction form
    202,990.62/280,127.59 = 112,352.84/x
  3. Step 3: Cross multiply
    202,990.62x = 280,127.59 × 112,352.84
  4. Step 4: Simplify right side
    202,990.62x = 31,473,128,617.34
  5. Step 5: Solve for x
    x = 31,473,128,617.34/202,990.62
  6. Step 6: Final answer
    x = 155,047.21

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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.