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Finding the Fourth Proportional to 290,254.92, 435,550.50 and 121,760.18

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Solution

The fourth proportional to 290,254.92, 435,550.50 and 121,760.18 is: 182,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,254.92 : 435,550.50 = 121,760.18 : x
  2. Step 2: Convert to fraction form
    290,254.92/435,550.50 = 121,760.18/x
  3. Step 3: Cross multiply
    290,254.92x = 435,550.50 × 121,760.18
  4. Step 4: Simplify right side
    290,254.92x = 53,032,707,279.09
  5. Step 5: Solve for x
    x = 53,032,707,279.09/290,254.92
  6. Step 6: Final answer
    x = 182,710.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.