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Finding the Fourth Proportional to 220,392.12, 304,134.74 and 124,907.64

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Solution

The fourth proportional to 220,392.12, 304,134.74 and 124,907.64 is: 172,368.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,392.12 : 304,134.74 = 124,907.64 : x
  2. Step 2: Convert to fraction form
    220,392.12/304,134.74 = 124,907.64/x
  3. Step 3: Cross multiply
    220,392.12x = 304,134.74 × 124,907.64
  4. Step 4: Simplify right side
    220,392.12x = 37,988,752,615.41
  5. Step 5: Solve for x
    x = 37,988,752,615.41/220,392.12
  6. Step 6: Final answer
    x = 172,368.92

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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.