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Finding the Fourth Proportional to 421,925.70, 632,895.06 and 137,615.04

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Solution

The fourth proportional to 421,925.70, 632,895.06 and 137,615.04 is: 206,424.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,925.70 : 632,895.06 = 137,615.04 : x
  2. Step 2: Convert to fraction form
    421,925.70/632,895.06 = 137,615.04/x
  3. Step 3: Cross multiply
    421,925.70x = 632,895.06 × 137,615.04
  4. Step 4: Simplify right side
    421,925.70x = 87,095,878,997.70
  5. Step 5: Solve for x
    x = 87,095,878,997.70/421,925.70
  6. Step 6: Final answer
    x = 206,424.68

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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.