Home / 420,220.42-579,931.58-238,949.22

Finding the Fourth Proportional to 420,220.42, 579,931.58 and 238,949.22

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Solution

The fourth proportional to 420,220.42, 579,931.58 and 238,949.22 is: 329,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,220.42 : 579,931.58 = 238,949.22 : x
  2. Step 2: Convert to fraction form
    420,220.42/579,931.58 = 238,949.22/x
  3. Step 3: Cross multiply
    420,220.42x = 579,931.58 × 238,949.22
  4. Step 4: Simplify right side
    420,220.42x = 138,574,195,794.71
  5. Step 5: Solve for x
    x = 138,574,195,794.71/420,220.42
  6. Step 6: Final answer
    x = 329,765.50

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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.