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Finding the Fourth Proportional to 213,642.35, 320,620.95 and 101,322.89

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Solution

The fourth proportional to 213,642.35, 320,620.95 and 101,322.89 is: 152,058.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,642.35 : 320,620.95 = 101,322.89 : x
  2. Step 2: Convert to fraction form
    213,642.35/320,620.95 = 101,322.89/x
  3. Step 3: Cross multiply
    213,642.35x = 320,620.95 × 101,322.89
  4. Step 4: Simplify right side
    213,642.35x = 32,486,239,645.44
  5. Step 5: Solve for x
    x = 32,486,239,645.44/213,642.35
  6. Step 6: Final answer
    x = 152,058.99

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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.