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Finding the Fourth Proportional to 199,634.40, 299,597.40 and 140,585.40

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Solution

The fourth proportional to 199,634.40, 299,597.40 and 140,585.40 is: 210,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,634.40 : 299,597.40 = 140,585.40 : x
  2. Step 2: Convert to fraction form
    199,634.40/299,597.40 = 140,585.40/x
  3. Step 3: Cross multiply
    199,634.40x = 299,597.40 × 140,585.40
  4. Step 4: Simplify right side
    199,634.40x = 42,119,020,317.96
  5. Step 5: Solve for x
    x = 42,119,020,317.96/199,634.40
  6. Step 6: Final answer
    x = 210,980.77

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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.