Home / 393,187.14-542,598.45-223,421.25

Finding the Fourth Proportional to 393,187.14, 542,598.45 and 223,421.25

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Solution

The fourth proportional to 393,187.14, 542,598.45 and 223,421.25 is: 308,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,187.14 : 542,598.45 = 223,421.25 : x
  2. Step 2: Convert to fraction form
    393,187.14/542,598.45 = 223,421.25/x
  3. Step 3: Cross multiply
    393,187.14x = 542,598.45 × 223,421.25
  4. Step 4: Simplify right side
    393,187.14x = 121,228,023,947.06
  5. Step 5: Solve for x
    x = 121,228,023,947.06/393,187.14
  6. Step 6: Final answer
    x = 308,321.44

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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.