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Finding the Fourth Proportional to 238,221.36, 328,744.44 and 130,788.72

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Solution

The fourth proportional to 238,221.36, 328,744.44 and 130,788.72 is: 180,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,221.36 : 328,744.44 = 130,788.72 : x
  2. Step 2: Convert to fraction form
    238,221.36/328,744.44 = 130,788.72/x
  3. Step 3: Cross multiply
    238,221.36x = 328,744.44 × 130,788.72
  4. Step 4: Simplify right side
    238,221.36x = 42,996,064,514.72
  5. Step 5: Solve for x
    x = 42,996,064,514.72/238,221.36
  6. Step 6: Final answer
    x = 180,487.86

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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.