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Finding the Fourth Proportional to 290,677.89, 400,885.70 and 188,602.77

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Solution

The fourth proportional to 290,677.89, 400,885.70 and 188,602.77 is: 260,109.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,677.89 : 400,885.70 = 188,602.77 : x
  2. Step 2: Convert to fraction form
    290,677.89/400,885.70 = 188,602.77/x
  3. Step 3: Cross multiply
    290,677.89x = 400,885.70 × 188,602.77
  4. Step 4: Simplify right side
    290,677.89x = 75,608,152,530.38
  5. Step 5: Solve for x
    x = 75,608,152,530.38/290,677.89
  6. Step 6: Final answer
    x = 260,109.75

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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.