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Finding the Fourth Proportional to 290,702.90, 436,117.22 and 88,282.36

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Solution

The fourth proportional to 290,702.90, 436,117.22 and 88,282.36 is: 132,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,702.90 : 436,117.22 = 88,282.36 : x
  2. Step 2: Convert to fraction form
    290,702.90/436,117.22 = 88,282.36/x
  3. Step 3: Cross multiply
    290,702.90x = 436,117.22 × 88,282.36
  4. Step 4: Simplify right side
    290,702.90x = 38,501,457,418.24
  5. Step 5: Solve for x
    x = 38,501,457,418.24/290,702.90
  6. Step 6: Final answer
    x = 132,442.63

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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.