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Finding the Fourth Proportional to 202,367.52, 279,212.76 and 130,721.40

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Solution

The fourth proportional to 202,367.52, 279,212.76 and 130,721.40 is: 180,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,367.52 : 279,212.76 = 130,721.40 : x
  2. Step 2: Convert to fraction form
    202,367.52/279,212.76 = 130,721.40/x
  3. Step 3: Cross multiply
    202,367.52x = 279,212.76 × 130,721.40
  4. Step 4: Simplify right side
    202,367.52x = 36,499,082,885.06
  5. Step 5: Solve for x
    x = 36,499,082,885.06/202,367.52
  6. Step 6: Final answer
    x = 180,360.38

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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.