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Finding the Fourth Proportional to 319,148.30, 440,425.55 and 175,908.91

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Solution

The fourth proportional to 319,148.30, 440,425.55 and 175,908.91 is: 242,754.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,148.30 : 440,425.55 = 175,908.91 : x
  2. Step 2: Convert to fraction form
    319,148.30/440,425.55 = 175,908.91/x
  3. Step 3: Cross multiply
    319,148.30x = 440,425.55 × 175,908.91
  4. Step 4: Simplify right side
    319,148.30x = 77,474,778,436.65
  5. Step 5: Solve for x
    x = 77,474,778,436.65/319,148.30
  6. Step 6: Final answer
    x = 242,754.79

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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.