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Finding the Fourth Proportional to 525,935.28, 725,841.48 and 311,144.40

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Solution

The fourth proportional to 525,935.28, 725,841.48 and 311,144.40 is: 429,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,935.28 : 725,841.48 = 311,144.40 : x
  2. Step 2: Convert to fraction form
    525,935.28/725,841.48 = 311,144.40/x
  3. Step 3: Cross multiply
    525,935.28x = 725,841.48 × 311,144.40
  4. Step 4: Simplify right side
    525,935.28x = 225,841,511,789.71
  5. Step 5: Solve for x
    x = 225,841,511,789.71/525,935.28
  6. Step 6: Final answer
    x = 429,409.32

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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.