Home / 319,018.79-440,276.96-238,306.20

Finding the Fourth Proportional to 319,018.79, 440,276.96 and 238,306.20

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Solution

The fourth proportional to 319,018.79, 440,276.96 and 238,306.20 is: 328,885.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,018.79 : 440,276.96 = 238,306.20 : x
  2. Step 2: Convert to fraction form
    319,018.79/440,276.96 = 238,306.20/x
  3. Step 3: Cross multiply
    319,018.79x = 440,276.96 × 238,306.20
  4. Step 4: Simplify right side
    319,018.79x = 104,920,728,229.88
  5. Step 5: Solve for x
    x = 104,920,728,229.88/319,018.79
  6. Step 6: Final answer
    x = 328,885.73

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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.