Home / 420,942.12-631,345.02-154,637.16

Finding the Fourth Proportional to 420,942.12, 631,345.02 and 154,637.16

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Solution

The fourth proportional to 420,942.12, 631,345.02 and 154,637.16 is: 231,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,942.12 : 631,345.02 = 154,637.16 : x
  2. Step 2: Convert to fraction form
    420,942.12/631,345.02 = 154,637.16/x
  3. Step 3: Cross multiply
    420,942.12x = 631,345.02 × 154,637.16
  4. Step 4: Simplify right side
    420,942.12x = 97,629,400,872.94
  5. Step 5: Solve for x
    x = 97,629,400,872.94/420,942.12
  6. Step 6: Final answer
    x = 231,930.70

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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.