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Finding the Fourth Proportional to 389,379.87, 537,242.36 and 228,148.47

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Solution

The fourth proportional to 389,379.87, 537,242.36 and 228,148.47 is: 314,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,379.87 : 537,242.36 = 228,148.47 : x
  2. Step 2: Convert to fraction form
    389,379.87/537,242.36 = 228,148.47/x
  3. Step 3: Cross multiply
    389,379.87x = 537,242.36 × 228,148.47
  4. Step 4: Simplify right side
    389,379.87x = 122,571,021,312.45
  5. Step 5: Solve for x
    x = 122,571,021,312.45/389,379.87
  6. Step 6: Final answer
    x = 314,785.20

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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.