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Finding the Fourth Proportional to 318,970.09, 440,178.87 and 175,728.88

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Solution

The fourth proportional to 318,970.09, 440,178.87 and 175,728.88 is: 242,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,970.09 : 440,178.87 = 175,728.88 : x
  2. Step 2: Convert to fraction form
    318,970.09/440,178.87 = 175,728.88/x
  3. Step 3: Cross multiply
    318,970.09x = 440,178.87 × 175,728.88
  4. Step 4: Simplify right side
    318,970.09x = 77,352,139,824.77
  5. Step 5: Solve for x
    x = 77,352,139,824.77/318,970.09
  6. Step 6: Final answer
    x = 242,505.93

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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.