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Finding the Fourth Proportional to 523,058.59, 721,703.10 and 308,218.69

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Solution

The fourth proportional to 523,058.59, 721,703.10 and 308,218.69 is: 425,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,058.59 : 721,703.10 = 308,218.69 : x
  2. Step 2: Convert to fraction form
    523,058.59/721,703.10 = 308,218.69/x
  3. Step 3: Cross multiply
    523,058.59x = 721,703.10 × 308,218.69
  4. Step 4: Simplify right side
    523,058.59x = 222,442,384,050.94
  5. Step 5: Solve for x
    x = 222,442,384,050.94/523,058.59
  6. Step 6: Final answer
    x = 425,272.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.