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Finding the Fourth Proportional to 525,886.04, 725,871.30 and 311,100.68

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Solution

The fourth proportional to 525,886.04, 725,871.30 and 311,100.68 is: 429,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,886.04 : 725,871.30 = 311,100.68 : x
  2. Step 2: Convert to fraction form
    525,886.04/725,871.30 = 311,100.68/x
  3. Step 3: Cross multiply
    525,886.04x = 725,871.30 × 311,100.68
  4. Step 4: Simplify right side
    525,886.04x = 225,819,055,022.48
  5. Step 5: Solve for x
    x = 225,819,055,022.48/525,886.04
  6. Step 6: Final answer
    x = 429,406.83

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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.