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Finding the Fourth Proportional to 319,226.72, 440,535.80 and 175,991.90

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Solution

The fourth proportional to 319,226.72, 440,535.80 and 175,991.90 is: 242,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,226.72 : 440,535.80 = 175,991.90 : x
  2. Step 2: Convert to fraction form
    319,226.72/440,535.80 = 175,991.90/x
  3. Step 3: Cross multiply
    319,226.72x = 440,535.80 × 175,991.90
  4. Step 4: Simplify right side
    319,226.72x = 77,530,730,697.32
  5. Step 5: Solve for x
    x = 77,530,730,697.32/319,226.72
  6. Step 6: Final answer
    x = 242,870.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.