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Finding the Fourth Proportional to 425,907, 638,722.22 and 141,521.19

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Solution

The fourth proportional to 425,907, 638,722.22 and 141,521.19 is: 212,235.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,907 : 638,722.22 = 141,521.19 : x
  2. Step 2: Convert to fraction form
    425,907/638,722.22 = 141,521.19/x
  3. Step 3: Cross multiply
    425,907x = 638,722.22 × 141,521.19
  4. Step 4: Simplify right side
    425,907x = 90,392,727,946.24
  5. Step 5: Solve for x
    x = 90,392,727,946.24/425,907
  6. Step 6: Final answer
    x = 212,235.84

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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.