Home / 420,211.23-579,887.76-229,220.52

Finding the Fourth Proportional to 420,211.23, 579,887.76 and 229,220.52

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Solution

The fourth proportional to 420,211.23, 579,887.76 and 229,220.52 is: 316,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,211.23 : 579,887.76 = 229,220.52 : x
  2. Step 2: Convert to fraction form
    420,211.23/579,887.76 = 229,220.52/x
  3. Step 3: Cross multiply
    420,211.23x = 579,887.76 × 229,220.52
  4. Step 4: Simplify right side
    420,211.23x = 132,922,173,888.84
  5. Step 5: Solve for x
    x = 132,922,173,888.84/420,211.23
  6. Step 6: Final answer
    x = 316,322.28

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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.