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Finding the Fourth Proportional to 223,813.70, 335,720.55 and 90,698.30

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Solution

The fourth proportional to 223,813.70, 335,720.55 and 90,698.30 is: 136,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,813.70 : 335,720.55 = 90,698.30 : x
  2. Step 2: Convert to fraction form
    223,813.70/335,720.55 = 90,698.30/x
  3. Step 3: Cross multiply
    223,813.70x = 335,720.55 × 90,698.30
  4. Step 4: Simplify right side
    223,813.70x = 30,449,283,160.07
  5. Step 5: Solve for x
    x = 30,449,283,160.07/223,813.70
  6. Step 6: Final answer
    x = 136,047.45

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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.