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Finding the Fourth Proportional to 202,073.48, 278,855.30 and 111,429.40

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Solution

The fourth proportional to 202,073.48, 278,855.30 and 111,429.40 is: 153,769.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,073.48 : 278,855.30 = 111,429.40 : x
  2. Step 2: Convert to fraction form
    202,073.48/278,855.30 = 111,429.40/x
  3. Step 3: Cross multiply
    202,073.48x = 278,855.30 × 111,429.40
  4. Step 4: Simplify right side
    202,073.48x = 31,072,678,765.82
  5. Step 5: Solve for x
    x = 31,072,678,765.82/202,073.48
  6. Step 6: Final answer
    x = 153,769.21

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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.