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Finding the Fourth Proportional to 357,378.21, 536,165.73 and 120,886.97

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Solution

The fourth proportional to 357,378.21, 536,165.73 and 120,886.97 is: 181,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,378.21 : 536,165.73 = 120,886.97 : x
  2. Step 2: Convert to fraction form
    357,378.21/536,165.73 = 120,886.97/x
  3. Step 3: Cross multiply
    357,378.21x = 536,165.73 × 120,886.97
  4. Step 4: Simplify right side
    357,378.21x = 64,815,447,836.71
  5. Step 5: Solve for x
    x = 64,815,447,836.71/357,378.21
  6. Step 6: Final answer
    x = 181,363.74

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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.