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Finding the Fourth Proportional to 360,030.80, 538,879.80 and 255,054.80

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Solution

The fourth proportional to 360,030.80, 538,879.80 and 255,054.80 is: 381,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,030.80 : 538,879.80 = 255,054.80 : x
  2. Step 2: Convert to fraction form
    360,030.80/538,879.80 = 255,054.80/x
  3. Step 3: Cross multiply
    360,030.80x = 538,879.80 × 255,054.80
  4. Step 4: Simplify right side
    360,030.80x = 137,443,879,613.04
  5. Step 5: Solve for x
    x = 137,443,879,613.04/360,030.80
  6. Step 6: Final answer
    x = 381,755.89

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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.