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Finding the Fourth Proportional to 238,212.88, 328,739.28 and 130,790.56

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Solution

The fourth proportional to 238,212.88, 328,739.28 and 130,790.56 is: 180,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,212.88 : 328,739.28 = 130,790.56 : x
  2. Step 2: Convert to fraction form
    238,212.88/328,739.28 = 130,790.56/x
  3. Step 3: Cross multiply
    238,212.88x = 328,739.28 × 130,790.56
  4. Step 4: Simplify right side
    238,212.88x = 42,995,994,525.20
  5. Step 5: Solve for x
    x = 42,995,994,525.20/238,212.88
  6. Step 6: Final answer
    x = 180,494.00

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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.