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Finding the Fourth Proportional to 207,429.82, 286,280.90 and 121,415.11

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Solution

The fourth proportional to 207,429.82, 286,280.90 and 121,415.11 is: 167,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,429.82 : 286,280.90 = 121,415.11 : x
  2. Step 2: Convert to fraction form
    207,429.82/286,280.90 = 121,415.11/x
  3. Step 3: Cross multiply
    207,429.82x = 286,280.90 × 121,415.11
  4. Step 4: Simplify right side
    207,429.82x = 34,758,826,096.93
  5. Step 5: Solve for x
    x = 34,758,826,096.93/207,429.82
  6. Step 6: Final answer
    x = 167,569.09

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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.