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Finding the Fourth Proportional to 423,996.42, 585,150.99 and 288,331.35

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Solution

The fourth proportional to 423,996.42, 585,150.99 and 288,331.35 is: 397,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,996.42 : 585,150.99 = 288,331.35 : x
  2. Step 2: Convert to fraction form
    423,996.42/585,150.99 = 288,331.35/x
  3. Step 3: Cross multiply
    423,996.42x = 585,150.99 × 288,331.35
  4. Step 4: Simplify right side
    423,996.42x = 168,717,371,624.98
  5. Step 5: Solve for x
    x = 168,717,371,624.98/423,996.42
  6. Step 6: Final answer
    x = 397,921.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.