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Finding the Fourth Proportional to 261,134.88, 360,339 and 153,698.51

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Solution

The fourth proportional to 261,134.88, 360,339 and 153,698.51 is: 212,087.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,134.88 : 360,339 = 153,698.51 : x
  2. Step 2: Convert to fraction form
    261,134.88/360,339 = 153,698.51/x
  3. Step 3: Cross multiply
    261,134.88x = 360,339 × 153,698.51
  4. Step 4: Simplify right side
    261,134.88x = 55,383,565,593.20
  5. Step 5: Solve for x
    x = 55,383,565,593.20/261,134.88
  6. Step 6: Final answer
    x = 212,087.97

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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.