Home / 319,017.45-440,275.11-238,304.85

Finding the Fourth Proportional to 319,017.45, 440,275.11 and 238,304.85

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Solution

The fourth proportional to 319,017.45, 440,275.11 and 238,304.85 is: 328,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,017.45 : 440,275.11 = 238,304.85 : x
  2. Step 2: Convert to fraction form
    319,017.45/440,275.11 = 238,304.85/x
  3. Step 3: Cross multiply
    319,017.45x = 440,275.11 × 238,304.85
  4. Step 4: Simplify right side
    319,017.45x = 104,919,692,855.76
  5. Step 5: Solve for x
    x = 104,919,692,855.76/319,017.45
  6. Step 6: Final answer
    x = 328,883.87

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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.