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Finding the Fourth Proportional to 389,263.44, 583,614.89 and 239,193.67

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Solution

The fourth proportional to 389,263.44, 583,614.89 and 239,193.67 is: 358,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,263.44 : 583,614.89 = 239,193.67 : x
  2. Step 2: Convert to fraction form
    389,263.44/583,614.89 = 239,193.67/x
  3. Step 3: Cross multiply
    389,263.44x = 583,614.89 × 239,193.67
  4. Step 4: Simplify right side
    389,263.44x = 139,596,985,100.58
  5. Step 5: Solve for x
    x = 139,596,985,100.58/389,263.44
  6. Step 6: Final answer
    x = 358,618.28

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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.