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Finding the Fourth Proportional to 631,148.87, 946,731.68 and 210,424.88

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Solution

The fourth proportional to 631,148.87, 946,731.68 and 210,424.88 is: 315,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,148.87 : 946,731.68 = 210,424.88 : x
  2. Step 2: Convert to fraction form
    631,148.87/946,731.68 = 210,424.88/x
  3. Step 3: Cross multiply
    631,148.87x = 946,731.68 × 210,424.88
  4. Step 4: Simplify right side
    631,148.87x = 199,215,900,156.20
  5. Step 5: Solve for x
    x = 199,215,900,156.20/631,148.87
  6. Step 6: Final answer
    x = 315,640.11

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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.