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Finding the Fourth Proportional to 630,036.80, 945,062.40 and 156,723.20

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Solution

The fourth proportional to 630,036.80, 945,062.40 and 156,723.20 is: 235,086.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,036.80 : 945,062.40 = 156,723.20 : x
  2. Step 2: Convert to fraction form
    630,036.80/945,062.40 = 156,723.20/x
  3. Step 3: Cross multiply
    630,036.80x = 945,062.40 × 156,723.20
  4. Step 4: Simplify right side
    630,036.80x = 148,113,203,527.68
  5. Step 5: Solve for x
    x = 148,113,203,527.68/630,036.80
  6. Step 6: Final answer
    x = 235,086.59

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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.