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Finding the Fourth Proportional to 207,908.40, 286,913.70 and 112,415.10

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Solution

The fourth proportional to 207,908.40, 286,913.70 and 112,415.10 is: 155,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,908.40 : 286,913.70 = 112,415.10 : x
  2. Step 2: Convert to fraction form
    207,908.40/286,913.70 = 112,415.10/x
  3. Step 3: Cross multiply
    207,908.40x = 286,913.70 × 112,415.10
  4. Step 4: Simplify right side
    207,908.40x = 32,253,432,276.87
  5. Step 5: Solve for x
    x = 32,253,432,276.87/207,908.40
  6. Step 6: Final answer
    x = 155,132.90

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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.