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Finding the Fourth Proportional to 207,478.76, 286,324.40 and 122,595.64

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Solution

The fourth proportional to 207,478.76, 286,324.40 and 122,595.64 is: 169,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,478.76 : 286,324.40 = 122,595.64 : x
  2. Step 2: Convert to fraction form
    207,478.76/286,324.40 = 122,595.64/x
  3. Step 3: Cross multiply
    207,478.76x = 286,324.40 × 122,595.64
  4. Step 4: Simplify right side
    207,478.76x = 35,102,123,065.62
  5. Step 5: Solve for x
    x = 35,102,123,065.62/207,478.76
  6. Step 6: Final answer
    x = 169,184.18

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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.