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Finding the Fourth Proportional to 262,368.74, 393,581.22 and 72,829.90

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Solution

The fourth proportional to 262,368.74, 393,581.22 and 72,829.90 is: 109,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,368.74 : 393,581.22 = 72,829.90 : x
  2. Step 2: Convert to fraction form
    262,368.74/393,581.22 = 72,829.90/x
  3. Step 3: Cross multiply
    262,368.74x = 393,581.22 × 72,829.90
  4. Step 4: Simplify right side
    262,368.74x = 28,664,480,894.48
  5. Step 5: Solve for x
    x = 28,664,480,894.48/262,368.74
  6. Step 6: Final answer
    x = 109,252.65

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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.