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Finding the Fourth Proportional to 192,658.64, 288,916.27 and 66,263.40

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Solution

The fourth proportional to 192,658.64, 288,916.27 and 66,263.40 is: 99,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,658.64 : 288,916.27 = 66,263.40 : x
  2. Step 2: Convert to fraction form
    192,658.64/288,916.27 = 66,263.40/x
  3. Step 3: Cross multiply
    192,658.64x = 288,916.27 × 66,263.40
  4. Step 4: Simplify right side
    192,658.64x = 19,144,574,199.86
  5. Step 5: Solve for x
    x = 19,144,574,199.86/192,658.64
  6. Step 6: Final answer
    x = 99,370.44

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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.