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Finding the Fourth Proportional to 243,639.21, 365,510.97 and 72,874.32

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Solution

The fourth proportional to 243,639.21, 365,510.97 and 72,874.32 is: 109,327.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,639.21 : 365,510.97 = 72,874.32 : x
  2. Step 2: Convert to fraction form
    243,639.21/365,510.97 = 72,874.32/x
  3. Step 3: Cross multiply
    243,639.21x = 365,510.97 × 72,874.32
  4. Step 4: Simplify right side
    243,639.21x = 26,636,363,391.29
  5. Step 5: Solve for x
    x = 26,636,363,391.29/243,639.21
  6. Step 6: Final answer
    x = 109,327.08

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1.5x scale

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.