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Finding the Fourth Proportional to 207,801.36, 286,765.20 and 112,307.76

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Solution

The fourth proportional to 207,801.36, 286,765.20 and 112,307.76 is: 154,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,801.36 : 286,765.20 = 112,307.76 : x
  2. Step 2: Convert to fraction form
    207,801.36/286,765.20 = 112,307.76/x
  3. Step 3: Cross multiply
    207,801.36x = 286,765.20 × 112,307.76
  4. Step 4: Simplify right side
    207,801.36x = 32,205,957,257.95
  5. Step 5: Solve for x
    x = 32,205,957,257.95/207,801.36
  6. Step 6: Final answer
    x = 154,984.34

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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.