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Finding the Fourth Proportional to 379,970.64, 524,130.99 and 250,910.28

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Solution

The fourth proportional to 379,970.64, 524,130.99 and 250,910.28 is: 346,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,970.64 : 524,130.99 = 250,910.28 : x
  2. Step 2: Convert to fraction form
    379,970.64/524,130.99 = 250,910.28/x
  3. Step 3: Cross multiply
    379,970.64x = 524,130.99 × 250,910.28
  4. Step 4: Simplify right side
    379,970.64x = 131,509,853,457.58
  5. Step 5: Solve for x
    x = 131,509,853,457.58/379,970.64
  6. Step 6: Final answer
    x = 346,105.30

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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.