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Finding the Fourth Proportional to 394,230.30, 553,322.10 and 394,230.30

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Solution

The fourth proportional to 394,230.30, 553,322.10 and 394,230.30 is: 553,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,230.30 : 553,322.10 = 394,230.30 : x
  2. Step 2: Convert to fraction form
    394,230.30/553,322.10 = 394,230.30/x
  3. Step 3: Cross multiply
    394,230.30x = 553,322.10 × 394,230.30
  4. Step 4: Simplify right side
    394,230.30x = 218,136,337,479.63
  5. Step 5: Solve for x
    x = 218,136,337,479.63/394,230.30
  6. Step 6: Final answer
    x = 553,322.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.