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Finding the Fourth Proportional to 379,544.86, 523,772.40 and 218,396.71

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Solution

The fourth proportional to 379,544.86, 523,772.40 and 218,396.71 is: 301,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,544.86 : 523,772.40 = 218,396.71 : x
  2. Step 2: Convert to fraction form
    379,544.86/523,772.40 = 218,396.71/x
  3. Step 3: Cross multiply
    379,544.86x = 523,772.40 × 218,396.71
  4. Step 4: Simplify right side
    379,544.86x = 114,390,168,948.80
  5. Step 5: Solve for x
    x = 114,390,168,948.80/379,544.86
  6. Step 6: Final answer
    x = 301,387.74

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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.