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Finding the Fourth Proportional to 202,422.98, 279,345.93 and 111,778.76

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Solution

The fourth proportional to 202,422.98, 279,345.93 and 111,778.76 is: 154,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,422.98 : 279,345.93 = 111,778.76 : x
  2. Step 2: Convert to fraction form
    202,422.98/279,345.93 = 111,778.76/x
  3. Step 3: Cross multiply
    202,422.98x = 279,345.93 × 111,778.76
  4. Step 4: Simplify right side
    202,422.98x = 31,224,941,666.45
  5. Step 5: Solve for x
    x = 31,224,941,666.45/202,422.98
  6. Step 6: Final answer
    x = 154,255.91

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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.