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Finding the Fourth Proportional to 379,898.84, 570,042.66 and 155,425.16

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Solution

The fourth proportional to 379,898.84, 570,042.66 and 155,425.16 is: 233,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,898.84 : 570,042.66 = 155,425.16 : x
  2. Step 2: Convert to fraction form
    379,898.84/570,042.66 = 155,425.16/x
  3. Step 3: Cross multiply
    379,898.84x = 570,042.66 × 155,425.16
  4. Step 4: Simplify right side
    379,898.84x = 88,598,971,637.33
  5. Step 5: Solve for x
    x = 88,598,971,637.33/379,898.84
  6. Step 6: Final answer
    x = 233,217.27

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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.