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Finding the Fourth Proportional to 630,095.28, 945,143.12 and 156,780.65

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Solution

The fourth proportional to 630,095.28, 945,143.12 and 156,780.65 is: 235,171.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,095.28 : 945,143.12 = 156,780.65 : x
  2. Step 2: Convert to fraction form
    630,095.28/945,143.12 = 156,780.65/x
  3. Step 3: Cross multiply
    630,095.28x = 945,143.12 × 156,780.65
  4. Step 4: Simplify right side
    630,095.28x = 148,180,152,696.63
  5. Step 5: Solve for x
    x = 148,180,152,696.63/630,095.28
  6. Step 6: Final answer
    x = 235,171.02

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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.