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Finding the Fourth Proportional to 380,788.13, 525,726.54 and 245,057.95

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Solution

The fourth proportional to 380,788.13, 525,726.54 and 245,057.95 is: 338,333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,788.13 : 525,726.54 = 245,057.95 : x
  2. Step 2: Convert to fraction form
    380,788.13/525,726.54 = 245,057.95/x
  3. Step 3: Cross multiply
    380,788.13x = 525,726.54 × 245,057.95
  4. Step 4: Simplify right side
    380,788.13x = 128,833,466,838.68
  5. Step 5: Solve for x
    x = 128,833,466,838.68/380,788.13
  6. Step 6: Final answer
    x = 338,333.72

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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.