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Finding the Fourth Proportional to 631,287.20, 946,124.40 and 256,887.20

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Solution

The fourth proportional to 631,287.20, 946,124.40 and 256,887.20 is: 385,002.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,287.20 : 946,124.40 = 256,887.20 : x
  2. Step 2: Convert to fraction form
    631,287.20/946,124.40 = 256,887.20/x
  3. Step 3: Cross multiply
    631,287.20x = 946,124.40 × 256,887.20
  4. Step 4: Simplify right side
    631,287.20x = 243,047,247,967.68
  5. Step 5: Solve for x
    x = 243,047,247,967.68/631,287.20
  6. Step 6: Final answer
    x = 385,002.65

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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.