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Finding the Fourth Proportional to 426,166.88, 639,046.08 and 201,340.16

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Solution

The fourth proportional to 426,166.88, 639,046.08 and 201,340.16 is: 301,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,166.88 : 639,046.08 = 201,340.16 : x
  2. Step 2: Convert to fraction form
    426,166.88/639,046.08 = 201,340.16/x
  3. Step 3: Cross multiply
    426,166.88x = 639,046.08 × 201,340.16
  4. Step 4: Simplify right side
    426,166.88x = 128,665,639,994.57
  5. Step 5: Solve for x
    x = 128,665,639,994.57/426,166.88
  6. Step 6: Final answer
    x = 301,913.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.