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Finding the Fourth Proportional to 251,637.78, 377,482.88 and 80,816.34

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Solution

The fourth proportional to 251,637.78, 377,482.88 and 80,816.34 is: 121,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,637.78 : 377,482.88 = 80,816.34 : x
  2. Step 2: Convert to fraction form
    251,637.78/377,482.88 = 80,816.34/x
  3. Step 3: Cross multiply
    251,637.78x = 377,482.88 × 80,816.34
  4. Step 4: Simplify right side
    251,637.78x = 30,506,784,774.26
  5. Step 5: Solve for x
    x = 30,506,784,774.26/251,637.78
  6. Step 6: Final answer
    x = 121,232.93

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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.