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Finding the Fourth Proportional to 209,956.70, 314,870.45 and 60,156.85

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Solution

The fourth proportional to 209,956.70, 314,870.45 and 60,156.85 is: 90,216.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,956.70 : 314,870.45 = 60,156.85 : x
  2. Step 2: Convert to fraction form
    209,956.70/314,870.45 = 60,156.85/x
  3. Step 3: Cross multiply
    209,956.70x = 314,870.45 × 60,156.85
  4. Step 4: Simplify right side
    209,956.70x = 18,941,613,342.12
  5. Step 5: Solve for x
    x = 18,941,613,342.12/209,956.70
  6. Step 6: Final answer
    x = 90,216.76

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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.