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Finding the Fourth Proportional to 630,087.80, 945,129.72 and 156,773.12

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Solution

The fourth proportional to 630,087.80, 945,129.72 and 156,773.12 is: 235,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,087.80 : 945,129.72 = 156,773.12 : x
  2. Step 2: Convert to fraction form
    630,087.80/945,129.72 = 156,773.12/x
  3. Step 3: Cross multiply
    630,087.80x = 945,129.72 × 156,773.12
  4. Step 4: Simplify right side
    630,087.80x = 148,170,935,009.13
  5. Step 5: Solve for x
    x = 148,170,935,009.13/630,087.80
  6. Step 6: Final answer
    x = 235,159.19

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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.