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Finding the Fourth Proportional to 628,007.60, 941,719.80 and 272,838.80

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Solution

The fourth proportional to 628,007.60, 941,719.80 and 272,838.80 is: 409,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,007.60 : 941,719.80 = 272,838.80 : x
  2. Step 2: Convert to fraction form
    628,007.60/941,719.80 = 272,838.80/x
  3. Step 3: Cross multiply
    628,007.60x = 941,719.80 × 272,838.80
  4. Step 4: Simplify right side
    628,007.60x = 256,937,700,168.24
  5. Step 5: Solve for x
    x = 256,937,700,168.24/628,007.60
  6. Step 6: Final answer
    x = 409,131.51

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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.