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Finding the Fourth Proportional to 422,588.68, 634,088.05 and 185,900.60

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Solution

The fourth proportional to 422,588.68, 634,088.05 and 185,900.60 is: 278,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,588.68 : 634,088.05 = 185,900.60 : x
  2. Step 2: Convert to fraction form
    422,588.68/634,088.05 = 185,900.60/x
  3. Step 3: Cross multiply
    422,588.68x = 634,088.05 × 185,900.60
  4. Step 4: Simplify right side
    422,588.68x = 117,877,350,068.30
  5. Step 5: Solve for x
    x = 117,877,350,068.30/422,588.68
  6. Step 6: Final answer
    x = 278,941.10

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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.