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Finding the Fourth Proportional to 238,218.65, 328,727.00 and 130,788.08

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Solution

The fourth proportional to 238,218.65, 328,727.00 and 130,788.08 is: 180,479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,218.65 : 328,727.00 = 130,788.08 : x
  2. Step 2: Convert to fraction form
    238,218.65/328,727.00 = 130,788.08/x
  3. Step 3: Cross multiply
    238,218.65x = 328,727.00 × 130,788.08
  4. Step 4: Simplify right side
    238,218.65x = 42,993,571,857.50
  5. Step 5: Solve for x
    x = 42,993,571,857.50/238,218.65
  6. Step 6: Final answer
    x = 180,479.46

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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.