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Finding the Fourth Proportional to 290,063.77, 435,116.60 and 121,414.39

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Solution

The fourth proportional to 290,063.77, 435,116.60 and 121,414.39 is: 182,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,063.77 : 435,116.60 = 121,414.39 : x
  2. Step 2: Convert to fraction form
    290,063.77/435,116.60 = 121,414.39/x
  3. Step 3: Cross multiply
    290,063.77x = 435,116.60 × 121,414.39
  4. Step 4: Simplify right side
    290,063.77x = 52,829,416,567.87
  5. Step 5: Solve for x
    x = 52,829,416,567.87/290,063.77
  6. Step 6: Final answer
    x = 182,130.35

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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.