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Finding the Fourth Proportional to 429,228.96, 644,267.40 and 322,240.92

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Solution

The fourth proportional to 429,228.96, 644,267.40 and 322,240.92 is: 483,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,228.96 : 644,267.40 = 322,240.92 : x
  2. Step 2: Convert to fraction form
    429,228.96/644,267.40 = 322,240.92/x
  3. Step 3: Cross multiply
    429,228.96x = 644,267.40 × 322,240.92
  4. Step 4: Simplify right side
    429,228.96x = 207,609,319,702.01
  5. Step 5: Solve for x
    x = 207,609,319,702.01/429,228.96
  6. Step 6: Final answer
    x = 483,679.67

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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.