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Finding the Fourth Proportional to 258,349.65, 387,598.59 and 108,512.88

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Solution

The fourth proportional to 258,349.65, 387,598.59 and 108,512.88 is: 162,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,349.65 : 387,598.59 = 108,512.88 : x
  2. Step 2: Convert to fraction form
    258,349.65/387,598.59 = 108,512.88/x
  3. Step 3: Cross multiply
    258,349.65x = 387,598.59 × 108,512.88
  4. Step 4: Simplify right side
    258,349.65x = 42,059,439,284.84
  5. Step 5: Solve for x
    x = 42,059,439,284.84/258,349.65
  6. Step 6: Final answer
    x = 162,800.45

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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.