Home / 420,655.24-631,066.04-154,418.06

Finding the Fourth Proportional to 420,655.24, 631,066.04 and 154,418.06

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Solution

The fourth proportional to 420,655.24, 631,066.04 and 154,418.06 is: 231,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,655.24 : 631,066.04 = 154,418.06 : x
  2. Step 2: Convert to fraction form
    420,655.24/631,066.04 = 154,418.06/x
  3. Step 3: Cross multiply
    420,655.24x = 631,066.04 × 154,418.06
  4. Step 4: Simplify right side
    420,655.24x = 97,447,995,013.32
  5. Step 5: Solve for x
    x = 97,447,995,013.32/420,655.24
  6. Step 6: Final answer
    x = 231,657.63

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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.