Home / 420,155.80-579,822.89-229,176.02

Finding the Fourth Proportional to 420,155.80, 579,822.89 and 229,176.02

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Solution

The fourth proportional to 420,155.80, 579,822.89 and 229,176.02 is: 316,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,155.80 : 579,822.89 = 229,176.02 : x
  2. Step 2: Convert to fraction form
    420,155.80/579,822.89 = 229,176.02/x
  3. Step 3: Cross multiply
    420,155.80x = 579,822.89 × 229,176.02
  4. Step 4: Simplify right side
    420,155.80x = 132,881,502,538.78
  5. Step 5: Solve for x
    x = 132,881,502,538.78/420,155.80
  6. Step 6: Final answer
    x = 316,267.21

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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.