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Finding the Fourth Proportional to 425,235.22, 637,836.88 and 105,388.14

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Solution

The fourth proportional to 425,235.22, 637,836.88 and 105,388.14 is: 158,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,235.22 : 637,836.88 = 105,388.14 : x
  2. Step 2: Convert to fraction form
    425,235.22/637,836.88 = 105,388.14/x
  3. Step 3: Cross multiply
    425,235.22x = 637,836.88 × 105,388.14
  4. Step 4: Simplify right side
    425,235.22x = 67,220,441,144.79
  5. Step 5: Solve for x
    x = 67,220,441,144.79/425,235.22
  6. Step 6: Final answer
    x = 158,078.25

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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.