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Finding the Fourth Proportional to 286,254.51, 428,727.79 and 136,599.92

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Solution

The fourth proportional to 286,254.51, 428,727.79 and 136,599.92 is: 204,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,254.51 : 428,727.79 = 136,599.92 : x
  2. Step 2: Convert to fraction form
    286,254.51/428,727.79 = 136,599.92/x
  3. Step 3: Cross multiply
    286,254.51x = 428,727.79 × 136,599.92
  4. Step 4: Simplify right side
    286,254.51x = 58,564,180,682.24
  5. Step 5: Solve for x
    x = 58,564,180,682.24/286,254.51
  6. Step 6: Final answer
    x = 204,587.80

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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.