Home / 421,063.08-631,844.75-155,010.43

Finding the Fourth Proportional to 421,063.08, 631,844.75 and 155,010.43

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Solution

The fourth proportional to 421,063.08, 631,844.75 and 155,010.43 is: 232,607.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,063.08 : 631,844.75 = 155,010.43 : x
  2. Step 2: Convert to fraction form
    421,063.08/631,844.75 = 155,010.43/x
  3. Step 3: Cross multiply
    421,063.08x = 631,844.75 × 155,010.43
  4. Step 4: Simplify right side
    421,063.08x = 97,942,524,013.95
  5. Step 5: Solve for x
    x = 97,942,524,013.95/421,063.08
  6. Step 6: Final answer
    x = 232,607.72

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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.