Home / 420,700.48-580,567.38-229,709.80

Finding the Fourth Proportional to 420,700.48, 580,567.38 and 229,709.80

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Solution

The fourth proportional to 420,700.48, 580,567.38 and 229,709.80 is: 316,999.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,700.48 : 580,567.38 = 229,709.80 : x
  2. Step 2: Convert to fraction form
    420,700.48/580,567.38 = 229,709.80/x
  3. Step 3: Cross multiply
    420,700.48x = 580,567.38 × 229,709.80
  4. Step 4: Simplify right side
    420,700.48x = 133,362,016,746.32
  5. Step 5: Solve for x
    x = 133,362,016,746.32/420,700.48
  6. Step 6: Final answer
    x = 316,999.92

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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.