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Finding the Fourth Proportional to 379,328.52, 523,483.92 and 209,573.58

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Solution

The fourth proportional to 379,328.52, 523,483.92 and 209,573.58 is: 289,217.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,328.52 : 523,483.92 = 209,573.58 : x
  2. Step 2: Convert to fraction form
    379,328.52/523,483.92 = 209,573.58/x
  3. Step 3: Cross multiply
    379,328.52x = 523,483.92 × 209,573.58
  4. Step 4: Simplify right side
    379,328.52x = 109,708,399,186.83
  5. Step 5: Solve for x
    x = 109,708,399,186.83/379,328.52
  6. Step 6: Final answer
    x = 289,217.38

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1.5x scale

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.