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Finding the Fourth Proportional to 395,044.71, 545,066.55 and 239,991.50

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Solution

The fourth proportional to 395,044.71, 545,066.55 and 239,991.50 is: 331,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,044.71 : 545,066.55 = 239,991.50 : x
  2. Step 2: Convert to fraction form
    395,044.71/545,066.55 = 239,991.50/x
  3. Step 3: Cross multiply
    395,044.71x = 545,066.55 × 239,991.50
  4. Step 4: Simplify right side
    395,044.71x = 130,811,336,208.99
  5. Step 5: Solve for x
    x = 130,811,336,208.99/395,044.71
  6. Step 6: Final answer
    x = 331,130.46

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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.