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Finding the Fourth Proportional to 394,712.47, 544,703.60 and 213,424.36

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Solution

The fourth proportional to 394,712.47, 544,703.60 and 213,424.36 is: 294,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,712.47 : 544,703.60 = 213,424.36 : x
  2. Step 2: Convert to fraction form
    394,712.47/544,703.60 = 213,424.36/x
  3. Step 3: Cross multiply
    394,712.47x = 544,703.60 × 213,424.36
  4. Step 4: Simplify right side
    394,712.47x = 116,253,013,429.06
  5. Step 5: Solve for x
    x = 116,253,013,429.06/394,712.47
  6. Step 6: Final answer
    x = 294,525.82

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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.