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Finding the Fourth Proportional to 630,173.12, 945,254.81 and 156,855.29

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Solution

The fourth proportional to 630,173.12, 945,254.81 and 156,855.29 is: 235,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,173.12 : 945,254.81 = 156,855.29 : x
  2. Step 2: Convert to fraction form
    630,173.12/945,254.81 = 156,855.29/x
  3. Step 3: Cross multiply
    630,173.12x = 945,254.81 × 156,855.29
  4. Step 4: Simplify right side
    630,173.12x = 148,268,213,012.31
  5. Step 5: Solve for x
    x = 148,268,213,012.31/630,173.12
  6. Step 6: Final answer
    x = 235,281.72

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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.