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Finding the Fourth Proportional to 397,558.40, 596,337.60 and 354,012.80

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Solution

The fourth proportional to 397,558.40, 596,337.60 and 354,012.80 is: 531,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,558.40 : 596,337.60 = 354,012.80 : x
  2. Step 2: Convert to fraction form
    397,558.40/596,337.60 = 354,012.80/x
  3. Step 3: Cross multiply
    397,558.40x = 596,337.60 × 354,012.80
  4. Step 4: Simplify right side
    397,558.40x = 211,111,143,521.28
  5. Step 5: Solve for x
    x = 211,111,143,521.28/397,558.40
  6. Step 6: Final answer
    x = 531,019.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.