Home / 319,121.05-440,385.72-175,880.76

Finding the Fourth Proportional to 319,121.05, 440,385.72 and 175,880.76

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Solution

The fourth proportional to 319,121.05, 440,385.72 and 175,880.76 is: 242,714.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,121.05 : 440,385.72 = 175,880.76 : x
  2. Step 2: Convert to fraction form
    319,121.05/440,385.72 = 175,880.76/x
  3. Step 3: Cross multiply
    319,121.05x = 440,385.72 × 175,880.76
  4. Step 4: Simplify right side
    319,121.05x = 77,455,375,126.75
  5. Step 5: Solve for x
    x = 77,455,375,126.75/319,121.05
  6. Step 6: Final answer
    x = 242,714.72

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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.