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Finding the Fourth Proportional to 202,913.75, 280,017.28 and 112,269.71

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Solution

The fourth proportional to 202,913.75, 280,017.28 and 112,269.71 is: 154,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,913.75 : 280,017.28 = 112,269.71 : x
  2. Step 2: Convert to fraction form
    202,913.75/280,017.28 = 112,269.71/x
  3. Step 3: Cross multiply
    202,913.75x = 280,017.28 × 112,269.71
  4. Step 4: Simplify right side
    202,913.75x = 31,437,459,239.96
  5. Step 5: Solve for x
    x = 31,437,459,239.96/202,913.75
  6. Step 6: Final answer
    x = 154,930.16

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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.