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Finding the Fourth Proportional to 379,154.25, 523,228.50 and 218,009.93

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Solution

The fourth proportional to 379,154.25, 523,228.50 and 218,009.93 is: 300,851.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,154.25 : 523,228.50 = 218,009.93 : x
  2. Step 2: Convert to fraction form
    379,154.25/523,228.50 = 218,009.93/x
  3. Step 3: Cross multiply
    379,154.25x = 523,228.50 × 218,009.93
  4. Step 4: Simplify right side
    379,154.25x = 114,069,006,042.86
  5. Step 5: Solve for x
    x = 114,069,006,042.86/379,154.25
  6. Step 6: Final answer
    x = 300,851.19

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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.