Home / 215,430.60-323,077.86-199,421.76

Finding the Fourth Proportional to 215,430.60, 323,077.86 and 199,421.76

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Solution

The fourth proportional to 215,430.60, 323,077.86 and 199,421.76 is: 299,069.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,430.60 : 323,077.86 = 199,421.76 : x
  2. Step 2: Convert to fraction form
    215,430.60/323,077.86 = 199,421.76/x
  3. Step 3: Cross multiply
    215,430.60x = 323,077.86 × 199,421.76
  4. Step 4: Simplify right side
    215,430.60x = 64,428,755,458.23
  5. Step 5: Solve for x
    x = 64,428,755,458.23/215,430.60
  6. Step 6: Final answer
    x = 299,069.66

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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.