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Finding the Fourth Proportional to 426,163.88, 639,041.58 and 201,337.16

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Solution

The fourth proportional to 426,163.88, 639,041.58 and 201,337.16 is: 301,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,163.88 : 639,041.58 = 201,337.16 : x
  2. Step 2: Convert to fraction form
    426,163.88/639,041.58 = 201,337.16/x
  3. Step 3: Cross multiply
    426,163.88x = 639,041.58 × 201,337.16
  4. Step 4: Simplify right side
    426,163.88x = 128,662,816,839.11
  5. Step 5: Solve for x
    x = 128,662,816,839.11/426,163.88
  6. Step 6: Final answer
    x = 301,909.25

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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.