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Finding the Fourth Proportional to 539,886.80, 810,175.80 and 315,246.80

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Solution

The fourth proportional to 539,886.80, 810,175.80 and 315,246.80 is: 473,072.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,886.80 : 810,175.80 = 315,246.80 : x
  2. Step 2: Convert to fraction form
    539,886.80/810,175.80 = 315,246.80/x
  3. Step 3: Cross multiply
    539,886.80x = 810,175.80 × 315,246.80
  4. Step 4: Simplify right side
    539,886.80x = 255,405,328,387.44
  5. Step 5: Solve for x
    x = 255,405,328,387.44/539,886.80
  6. Step 6: Final answer
    x = 473,072.00

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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.