Home / 425,525.27-638,433.70-145,239.35

Finding the Fourth Proportional to 425,525.27, 638,433.70 and 145,239.35

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Solution

The fourth proportional to 425,525.27, 638,433.70 and 145,239.35 is: 217,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,525.27 : 638,433.70 = 145,239.35 : x
  2. Step 2: Convert to fraction form
    425,525.27/638,433.70 = 145,239.35/x
  3. Step 3: Cross multiply
    425,525.27x = 638,433.70 × 145,239.35
  4. Step 4: Simplify right side
    425,525.27x = 92,725,692,050.83
  5. Step 5: Solve for x
    x = 92,725,692,050.83/425,525.27
  6. Step 6: Final answer
    x = 217,908.78

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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.