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Finding the Fourth Proportional to 538,272.80, 809,158.80 and 461,290.40

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Solution

The fourth proportional to 538,272.80, 809,158.80 and 461,290.40 is: 693,434.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,272.80 : 809,158.80 = 461,290.40 : x
  2. Step 2: Convert to fraction form
    538,272.80/809,158.80 = 461,290.40/x
  3. Step 3: Cross multiply
    538,272.80x = 809,158.80 × 461,290.40
  4. Step 4: Simplify right side
    538,272.80x = 373,257,186,515.52
  5. Step 5: Solve for x
    x = 373,257,186,515.52/538,272.80
  6. Step 6: Final answer
    x = 693,434.98

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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.