Home / 421,811.40-632,717.10-137,501.40

Finding the Fourth Proportional to 421,811.40, 632,717.10 and 137,501.40

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Solution

The fourth proportional to 421,811.40, 632,717.10 and 137,501.40 is: 206,252.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,811.40 : 632,717.10 = 137,501.40 : x
  2. Step 2: Convert to fraction form
    421,811.40/632,717.10 = 137,501.40/x
  3. Step 3: Cross multiply
    421,811.40x = 632,717.10 × 137,501.40
  4. Step 4: Simplify right side
    421,811.40x = 86,999,487,053.94
  5. Step 5: Solve for x
    x = 86,999,487,053.94/421,811.40
  6. Step 6: Final answer
    x = 206,252.10

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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.