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Finding the Fourth Proportional to 290,087.04, 435,303.10 and 156,964.62

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Solution

The fourth proportional to 290,087.04, 435,303.10 and 156,964.62 is: 235,540.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,087.04 : 435,303.10 = 156,964.62 : x
  2. Step 2: Convert to fraction form
    290,087.04/435,303.10 = 156,964.62/x
  3. Step 3: Cross multiply
    290,087.04x = 435,303.10 × 156,964.62
  4. Step 4: Simplify right side
    290,087.04x = 68,327,185,676.32
  5. Step 5: Solve for x
    x = 68,327,185,676.32/290,087.04
  6. Step 6: Final answer
    x = 235,540.29

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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.