Home / 217,023.60-325,535.40-138,291.60

Finding the Fourth Proportional to 217,023.60, 325,535.40 and 138,291.60

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Solution

The fourth proportional to 217,023.60, 325,535.40 and 138,291.60 is: 207,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,023.60 : 325,535.40 = 138,291.60 : x
  2. Step 2: Convert to fraction form
    217,023.60/325,535.40 = 138,291.60/x
  3. Step 3: Cross multiply
    217,023.60x = 325,535.40 × 138,291.60
  4. Step 4: Simplify right side
    217,023.60x = 45,018,811,322.64
  5. Step 5: Solve for x
    x = 45,018,811,322.64/217,023.60
  6. Step 6: Final answer
    x = 207,437.40

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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.