Home / 420,220.48-579,931.67-238,949.28

Finding the Fourth Proportional to 420,220.48, 579,931.67 and 238,949.28

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Solution

The fourth proportional to 420,220.48, 579,931.67 and 238,949.28 is: 329,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,220.48 : 579,931.67 = 238,949.28 : x
  2. Step 2: Convert to fraction form
    420,220.48/579,931.67 = 238,949.28/x
  3. Step 3: Cross multiply
    420,220.48x = 579,931.67 × 238,949.28
  4. Step 4: Simplify right side
    420,220.48x = 138,574,254,248.98
  5. Step 5: Solve for x
    x = 138,574,254,248.98/420,220.48
  6. Step 6: Final answer
    x = 329,765.59

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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.