Home / 429,243.68-643,962.72-229,458.80

Finding the Fourth Proportional to 429,243.68, 643,962.72 and 229,458.80

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Solution

The fourth proportional to 429,243.68, 643,962.72 and 229,458.80 is: 344,240.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,243.68 : 643,962.72 = 229,458.80 : x
  2. Step 2: Convert to fraction form
    429,243.68/643,962.72 = 229,458.80/x
  3. Step 3: Cross multiply
    429,243.68x = 643,962.72 × 229,458.80
  4. Step 4: Simplify right side
    429,243.68x = 147,762,912,975.94
  5. Step 5: Solve for x
    x = 147,762,912,975.94/429,243.68
  6. Step 6: Final answer
    x = 344,240.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.