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Finding the Fourth Proportional to 319,178.64, 440,485.88 and 175,938.24

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Solution

The fourth proportional to 319,178.64, 440,485.88 and 175,938.24 is: 242,805.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,178.64 : 440,485.88 = 175,938.24 : x
  2. Step 2: Convert to fraction form
    319,178.64/440,485.88 = 175,938.24/x
  3. Step 3: Cross multiply
    319,178.64x = 440,485.88 × 175,938.24
  4. Step 4: Simplify right side
    319,178.64x = 77,498,310,472.05
  5. Step 5: Solve for x
    x = 77,498,310,472.05/319,178.64
  6. Step 6: Final answer
    x = 242,805.44

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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.