Home / 429,239.55-643,000.92-258,367.41

Finding the Fourth Proportional to 429,239.55, 643,000.92 and 258,367.41

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Solution

The fourth proportional to 429,239.55, 643,000.92 and 258,367.41 is: 387,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,239.55 : 643,000.92 = 258,367.41 : x
  2. Step 2: Convert to fraction form
    429,239.55/643,000.92 = 258,367.41/x
  3. Step 3: Cross multiply
    429,239.55x = 643,000.92 × 258,367.41
  4. Step 4: Simplify right side
    429,239.55x = 166,130,482,328.02
  5. Step 5: Solve for x
    x = 166,130,482,328.02/429,239.55
  6. Step 6: Final answer
    x = 387,034.42

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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.