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Finding the Fourth Proportional to 290,017.40, 435,026.10 and 188,540.60

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Solution

The fourth proportional to 290,017.40, 435,026.10 and 188,540.60 is: 282,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,017.40 : 435,026.10 = 188,540.60 : x
  2. Step 2: Convert to fraction form
    290,017.40/435,026.10 = 188,540.60/x
  3. Step 3: Cross multiply
    290,017.40x = 435,026.10 × 188,540.60
  4. Step 4: Simplify right side
    290,017.40x = 82,020,081,909.66
  5. Step 5: Solve for x
    x = 82,020,081,909.66/290,017.40
  6. Step 6: Final answer
    x = 282,810.90

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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.