Home / 420,941.12-631,343.52-154,636.16

Finding the Fourth Proportional to 420,941.12, 631,343.52 and 154,636.16

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Solution

The fourth proportional to 420,941.12, 631,343.52 and 154,636.16 is: 231,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,941.12 : 631,343.52 = 154,636.16 : x
  2. Step 2: Convert to fraction form
    420,941.12/631,343.52 = 154,636.16/x
  3. Step 3: Cross multiply
    420,941.12x = 631,343.52 × 154,636.16
  4. Step 4: Simplify right side
    420,941.12x = 97,628,537,573.68
  5. Step 5: Solve for x
    x = 97,628,537,573.68/420,941.12
  6. Step 6: Final answer
    x = 231,929.20

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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.