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Finding the Fourth Proportional to 393,663.76, 590,349.52 and 309,588.16

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Solution

The fourth proportional to 393,663.76, 590,349.52 and 309,588.16 is: 464,267.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,663.76 : 590,349.52 = 309,588.16 : x
  2. Step 2: Convert to fraction form
    393,663.76/590,349.52 = 309,588.16/x
  3. Step 3: Cross multiply
    393,663.76x = 590,349.52 × 309,588.16
  4. Step 4: Simplify right side
    393,663.76x = 182,765,221,653.68
  5. Step 5: Solve for x
    x = 182,765,221,653.68/393,663.76
  6. Step 6: Final answer
    x = 464,267.33

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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.