Home / 420,161.89-579,823.40-229,175.28

Finding the Fourth Proportional to 420,161.89, 579,823.40 and 229,175.28

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Solution

The fourth proportional to 420,161.89, 579,823.40 and 229,175.28 is: 316,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,161.89 : 579,823.40 = 229,175.28 : x
  2. Step 2: Convert to fraction form
    420,161.89/579,823.40 = 229,175.28/x
  3. Step 3: Cross multiply
    420,161.89x = 579,823.40 × 229,175.28
  4. Step 4: Simplify right side
    420,161.89x = 132,881,190,618.49
  5. Step 5: Solve for x
    x = 132,881,190,618.49/420,161.89
  6. Step 6: Final answer
    x = 316,261.89

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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.