Home / 421,141.20-631,665.30-105,598.08

Finding the Fourth Proportional to 421,141.20, 631,665.30 and 105,598.08

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Solution

The fourth proportional to 421,141.20, 631,665.30 and 105,598.08 is: 158,385.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,141.20 : 631,665.30 = 105,598.08 : x
  2. Step 2: Convert to fraction form
    421,141.20/631,665.30 = 105,598.08/x
  3. Step 3: Cross multiply
    421,141.20x = 631,665.30 × 105,598.08
  4. Step 4: Simplify right side
    421,141.20x = 66,702,642,882.62
  5. Step 5: Solve for x
    x = 66,702,642,882.62/421,141.20
  6. Step 6: Final answer
    x = 158,385.46

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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.