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Finding the Fourth Proportional to 426,436.84, 639,652.68 and 106,587.10

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Solution

The fourth proportional to 426,436.84, 639,652.68 and 106,587.10 is: 159,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,436.84 : 639,652.68 = 106,587.10 : x
  2. Step 2: Convert to fraction form
    426,436.84/639,652.68 = 106,587.10/x
  3. Step 3: Cross multiply
    426,436.84x = 639,652.68 × 106,587.10
  4. Step 4: Simplify right side
    426,436.84x = 68,178,724,168.43
  5. Step 5: Solve for x
    x = 68,178,724,168.43/426,436.84
  6. Step 6: Final answer
    x = 159,880.01

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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.