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Finding the Fourth Proportional to 393,313.70, 590,407.95 and 243,722.90

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Solution

The fourth proportional to 393,313.70, 590,407.95 and 243,722.90 is: 365,855.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,313.70 : 590,407.95 = 243,722.90 : x
  2. Step 2: Convert to fraction form
    393,313.70/590,407.95 = 243,722.90/x
  3. Step 3: Cross multiply
    393,313.70x = 590,407.95 × 243,722.90
  4. Step 4: Simplify right side
    393,313.70x = 143,895,937,757.06
  5. Step 5: Solve for x
    x = 143,895,937,757.06/393,313.70
  6. Step 6: Final answer
    x = 365,855.39

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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.