Home / 420,111.42-579,803.58-238,850.70

Finding the Fourth Proportional to 420,111.42, 579,803.58 and 238,850.70

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Solution

The fourth proportional to 420,111.42, 579,803.58 and 238,850.70 is: 329,642.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,111.42 : 579,803.58 = 238,850.70 : x
  2. Step 2: Convert to fraction form
    420,111.42/579,803.58 = 238,850.70/x
  3. Step 3: Cross multiply
    420,111.42x = 579,803.58 × 238,850.70
  4. Step 4: Simplify right side
    420,111.42x = 138,486,490,945.51
  5. Step 5: Solve for x
    x = 138,486,490,945.51/420,111.42
  6. Step 6: Final answer
    x = 329,642.29

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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.