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Finding the Fourth Proportional to 268,726.64, 400,719.16 and 266,328.32

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Solution

The fourth proportional to 268,726.64, 400,719.16 and 266,328.32 is: 397,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,726.64 : 400,719.16 = 266,328.32 : x
  2. Step 2: Convert to fraction form
    268,726.64/400,719.16 = 266,328.32/x
  3. Step 3: Cross multiply
    268,726.64x = 400,719.16 × 266,328.32
  4. Step 4: Simplify right side
    268,726.64x = 106,722,860,674.61
  5. Step 5: Solve for x
    x = 106,722,860,674.61/268,726.64
  6. Step 6: Final answer
    x = 397,142.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.