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Finding the Fourth Proportional to 223,312.70, 334,966.86 and 90,190.59

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Solution

The fourth proportional to 223,312.70, 334,966.86 and 90,190.59 is: 135,285.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,312.70 : 334,966.86 = 90,190.59 : x
  2. Step 2: Convert to fraction form
    223,312.70/334,966.86 = 90,190.59/x
  3. Step 3: Cross multiply
    223,312.70x = 334,966.86 × 90,190.59
  4. Step 4: Simplify right side
    223,312.70x = 30,210,858,733.85
  5. Step 5: Solve for x
    x = 30,210,858,733.85/223,312.70
  6. Step 6: Final answer
    x = 135,285.00

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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.