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Finding the Fourth Proportional to 290,181.60, 435,116.40 and 103,168.80

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Solution

The fourth proportional to 290,181.60, 435,116.40 and 103,168.80 is: 154,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,181.60 : 435,116.40 = 103,168.80 : x
  2. Step 2: Convert to fraction form
    290,181.60/435,116.40 = 103,168.80/x
  3. Step 3: Cross multiply
    290,181.60x = 435,116.40 × 103,168.80
  4. Step 4: Simplify right side
    290,181.60x = 44,890,436,848.32
  5. Step 5: Solve for x
    x = 44,890,436,848.32/290,181.60
  6. Step 6: Final answer
    x = 154,697.74

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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.