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Finding the Fourth Proportional to 207,908.90, 286,914.39 and 112,415.60

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Solution

The fourth proportional to 207,908.90, 286,914.39 and 112,415.60 is: 155,133.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,908.90 : 286,914.39 = 112,415.60 : x
  2. Step 2: Convert to fraction form
    207,908.90/286,914.39 = 112,415.60/x
  3. Step 3: Cross multiply
    207,908.90x = 286,914.39 × 112,415.60
  4. Step 4: Simplify right side
    207,908.90x = 32,253,653,300.48
  5. Step 5: Solve for x
    x = 32,253,653,300.48/207,908.90
  6. Step 6: Final answer
    x = 155,133.59

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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.