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Finding the Fourth Proportional to 393,558.30, 590,337.45 and 370,230.30

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Solution

The fourth proportional to 393,558.30, 590,337.45 and 370,230.30 is: 555,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,558.30 : 590,337.45 = 370,230.30 : x
  2. Step 2: Convert to fraction form
    393,558.30/590,337.45 = 370,230.30/x
  3. Step 3: Cross multiply
    393,558.30x = 590,337.45 × 370,230.30
  4. Step 4: Simplify right side
    393,558.30x = 218,560,811,214.74
  5. Step 5: Solve for x
    x = 218,560,811,214.74/393,558.30
  6. Step 6: Final answer
    x = 555,345.45

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1.5x scale

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.