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Finding the Fourth Proportional to 391,710.99, 540,726.54 and 264,558.81

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Solution

The fourth proportional to 391,710.99, 540,726.54 and 264,558.81 is: 365,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,710.99 : 540,726.54 = 264,558.81 : x
  2. Step 2: Convert to fraction form
    391,710.99/540,726.54 = 264,558.81/x
  3. Step 3: Cross multiply
    391,710.99x = 540,726.54 × 264,558.81
  4. Step 4: Simplify right side
    391,710.99x = 143,053,969,957.82
  5. Step 5: Solve for x
    x = 143,053,969,957.82/391,710.99
  6. Step 6: Final answer
    x = 365,202.85

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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.