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Finding the Fourth Proportional to 394,300.19, 542,412.50 and 345,683.18

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Solution

The fourth proportional to 394,300.19, 542,412.50 and 345,683.18 is: 475,533.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,300.19 : 542,412.50 = 345,683.18 : x
  2. Step 2: Convert to fraction form
    394,300.19/542,412.50 = 345,683.18/x
  3. Step 3: Cross multiply
    394,300.19x = 542,412.50 × 345,683.18
  4. Step 4: Simplify right side
    394,300.19x = 187,502,873,431.27
  5. Step 5: Solve for x
    x = 187,502,873,431.27/394,300.19
  6. Step 6: Final answer
    x = 475,533.31

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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.