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Finding the Fourth Proportional to 321,015.64, 442,882.62 and 207,900.76

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Solution

The fourth proportional to 321,015.64, 442,882.62 and 207,900.76 is: 286,826.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,015.64 : 442,882.62 = 207,900.76 : x
  2. Step 2: Convert to fraction form
    321,015.64/442,882.62 = 207,900.76/x
  3. Step 3: Cross multiply
    321,015.64x = 442,882.62 × 207,900.76
  4. Step 4: Simplify right side
    321,015.64x = 92,075,633,288.79
  5. Step 5: Solve for x
    x = 92,075,633,288.79/321,015.64
  6. Step 6: Final answer
    x = 286,826.00

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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.