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Finding the Fourth Proportional to 539,142.80, 808,422.60 and 223,631.60

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Solution

The fourth proportional to 539,142.80, 808,422.60 and 223,631.60 is: 335,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,142.80 : 808,422.60 = 223,631.60 : x
  2. Step 2: Convert to fraction form
    539,142.80/808,422.60 = 223,631.60/x
  3. Step 3: Cross multiply
    539,142.80x = 808,422.60 × 223,631.60
  4. Step 4: Simplify right side
    539,142.80x = 180,788,839,514.16
  5. Step 5: Solve for x
    x = 180,788,839,514.16/539,142.80
  6. Step 6: Final answer
    x = 335,326.45

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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.