Home / 421,282.30-631,904.01-105,732.22

Finding the Fourth Proportional to 421,282.30, 631,904.01 and 105,732.22

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Solution

The fourth proportional to 421,282.30, 631,904.01 and 105,732.22 is: 158,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,282.30 : 631,904.01 = 105,732.22 : x
  2. Step 2: Convert to fraction form
    421,282.30/631,904.01 = 105,732.22/x
  3. Step 3: Cross multiply
    421,282.30x = 631,904.01 × 105,732.22
  4. Step 4: Simplify right side
    421,282.30x = 66,812,613,804.20
  5. Step 5: Solve for x
    x = 66,812,613,804.20/421,282.30
  6. Step 6: Final answer
    x = 158,593.45

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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.