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Finding the Fourth Proportional to 213,613.47, 320,468.67 and 113,721.03

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Solution

The fourth proportional to 213,613.47, 320,468.67 and 113,721.03 is: 170,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,613.47 : 320,468.67 = 113,721.03 : x
  2. Step 2: Convert to fraction form
    213,613.47/320,468.67 = 113,721.03/x
  3. Step 3: Cross multiply
    213,613.47x = 320,468.67 × 113,721.03
  4. Step 4: Simplify right side
    213,613.47x = 36,444,027,235.13
  5. Step 5: Solve for x
    x = 36,444,027,235.13/213,613.47
  6. Step 6: Final answer
    x = 170,607.35

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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.