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Finding the Fourth Proportional to 379,036.55, 522,881.60 and 225,966.88

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Solution

The fourth proportional to 379,036.55, 522,881.60 and 225,966.88 is: 311,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,036.55 : 522,881.60 = 225,966.88 : x
  2. Step 2: Convert to fraction form
    379,036.55/522,881.60 = 225,966.88/x
  3. Step 3: Cross multiply
    379,036.55x = 522,881.60 × 225,966.88
  4. Step 4: Simplify right side
    379,036.55x = 118,153,920,017.17
  5. Step 5: Solve for x
    x = 118,153,920,017.17/379,036.55
  6. Step 6: Final answer
    x = 311,721.71

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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.