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Finding the Fourth Proportional to 330,834.49, 456,655.67 and 187,689.67

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Solution

The fourth proportional to 330,834.49, 456,655.67 and 187,689.67 is: 259,070.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,834.49 : 456,655.67 = 187,689.67 : x
  2. Step 2: Convert to fraction form
    330,834.49/456,655.67 = 187,689.67/x
  3. Step 3: Cross multiply
    330,834.49x = 456,655.67 × 187,689.67
  4. Step 4: Simplify right side
    330,834.49x = 85,709,552,005.93
  5. Step 5: Solve for x
    x = 85,709,552,005.93/330,834.49
  6. Step 6: Final answer
    x = 259,070.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.