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Finding the Fourth Proportional to 380,789.32, 525,728.55 and 245,059.66

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Solution

The fourth proportional to 380,789.32, 525,728.55 and 245,059.66 is: 338,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,789.32 : 525,728.55 = 245,059.66 : x
  2. Step 2: Convert to fraction form
    380,789.32/525,728.55 = 245,059.66/x
  3. Step 3: Cross multiply
    380,789.32x = 525,728.55 × 245,059.66
  4. Step 4: Simplify right side
    380,789.32x = 128,834,859,715.29
  5. Step 5: Solve for x
    x = 128,834,859,715.29/380,789.32
  6. Step 6: Final answer
    x = 338,336.33

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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.