Home / 420,153.24-579,860.48-238,892.32

Finding the Fourth Proportional to 420,153.24, 579,860.48 and 238,892.32

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Solution

The fourth proportional to 420,153.24, 579,860.48 and 238,892.32 is: 329,699.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,153.24 : 579,860.48 = 238,892.32 : x
  2. Step 2: Convert to fraction form
    420,153.24/579,860.48 = 238,892.32/x
  3. Step 3: Cross multiply
    420,153.24x = 579,860.48 × 238,892.32
  4. Step 4: Simplify right side
    420,153.24x = 138,524,215,343.51
  5. Step 5: Solve for x
    x = 138,524,215,343.51/420,153.24
  6. Step 6: Final answer
    x = 329,699.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.