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Finding the Fourth Proportional to 220,690.88, 304,507.28 and 144,321.92

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Solution

The fourth proportional to 220,690.88, 304,507.28 and 144,321.92 is: 199,134.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,690.88 : 304,507.28 = 144,321.92 : x
  2. Step 2: Convert to fraction form
    220,690.88/304,507.28 = 144,321.92/x
  3. Step 3: Cross multiply
    220,690.88x = 304,507.28 × 144,321.92
  4. Step 4: Simplify right side
    220,690.88x = 43,947,075,303.58
  5. Step 5: Solve for x
    x = 43,947,075,303.58/220,690.88
  6. Step 6: Final answer
    x = 199,134.08

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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.