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Finding the Fourth Proportional to 425,709.74, 587,493.61 and 253,604.18

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Solution

The fourth proportional to 425,709.74, 587,493.61 and 253,604.18 is: 349,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,709.74 : 587,493.61 = 253,604.18 : x
  2. Step 2: Convert to fraction form
    425,709.74/587,493.61 = 253,604.18/x
  3. Step 3: Cross multiply
    425,709.74x = 587,493.61 × 253,604.18
  4. Step 4: Simplify right side
    425,709.74x = 148,990,831,647.81
  5. Step 5: Solve for x
    x = 148,990,831,647.81/425,709.74
  6. Step 6: Final answer
    x = 349,982.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.