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Finding the Fourth Proportional to 258,315.68, 387,471.04 and 153,058.88

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Solution

The fourth proportional to 258,315.68, 387,471.04 and 153,058.88 is: 229,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,315.68 : 387,471.04 = 153,058.88 : x
  2. Step 2: Convert to fraction form
    258,315.68/387,471.04 = 153,058.88/x
  3. Step 3: Cross multiply
    258,315.68x = 387,471.04 × 153,058.88
  4. Step 4: Simplify right side
    258,315.68x = 59,305,883,414.84
  5. Step 5: Solve for x
    x = 59,305,883,414.84/258,315.68
  6. Step 6: Final answer
    x = 229,586.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.