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Finding the Fourth Proportional to 611,479.40, 917,331.86 and 201,171.80

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Solution

The fourth proportional to 611,479.40, 917,331.86 and 201,171.80 is: 301,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,479.40 : 917,331.86 = 201,171.80 : x
  2. Step 2: Convert to fraction form
    611,479.40/917,331.86 = 201,171.80/x
  3. Step 3: Cross multiply
    611,479.40x = 917,331.86 × 201,171.80
  4. Step 4: Simplify right side
    611,479.40x = 184,541,302,172.61
  5. Step 5: Solve for x
    x = 184,541,302,172.61/611,479.40
  6. Step 6: Final answer
    x = 301,794.80

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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.