Home / 421,570.10-631,748.84-181,618.12

Finding the Fourth Proportional to 421,570.10, 631,748.84 and 181,618.12

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Solution

The fourth proportional to 421,570.10, 631,748.84 and 181,618.12 is: 272,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,570.10 : 631,748.84 = 181,618.12 : x
  2. Step 2: Convert to fraction form
    421,570.10/631,748.84 = 181,618.12/x
  3. Step 3: Cross multiply
    421,570.10x = 631,748.84 × 181,618.12
  4. Step 4: Simplify right side
    421,570.10x = 114,737,036,632.98
  5. Step 5: Solve for x
    x = 114,737,036,632.98/421,570.10
  6. Step 6: Final answer
    x = 272,165.97

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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.