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Finding the Fourth Proportional to 238,320.20, 328,911.06 and 137,718.20

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Solution

The fourth proportional to 238,320.20, 328,911.06 and 137,718.20 is: 190,067.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,320.20 : 328,911.06 = 137,718.20 : x
  2. Step 2: Convert to fraction form
    238,320.20/328,911.06 = 137,718.20/x
  3. Step 3: Cross multiply
    238,320.20x = 328,911.06 × 137,718.20
  4. Step 4: Simplify right side
    238,320.20x = 45,297,037,498.74
  5. Step 5: Solve for x
    x = 45,297,037,498.74/238,320.20
  6. Step 6: Final answer
    x = 190,067.98

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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.