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Finding the Fourth Proportional to 630,127.80, 945,189.72 and 156,813.48

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Solution

The fourth proportional to 630,127.80, 945,189.72 and 156,813.48 is: 235,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,127.80 : 945,189.72 = 156,813.48 : x
  2. Step 2: Convert to fraction form
    630,127.80/945,189.72 = 156,813.48/x
  3. Step 3: Cross multiply
    630,127.80x = 945,189.72 × 156,813.48
  4. Step 4: Simplify right side
    630,127.80x = 148,218,489,253.43
  5. Step 5: Solve for x
    x = 148,218,489,253.43/630,127.80
  6. Step 6: Final answer
    x = 235,219.73

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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.