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Finding the Fourth Proportional to 290,464.70, 435,697.05 and 264,220.70

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Solution

The fourth proportional to 290,464.70, 435,697.05 and 264,220.70 is: 396,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,464.70 : 435,697.05 = 264,220.70 : x
  2. Step 2: Convert to fraction form
    290,464.70/435,697.05 = 264,220.70/x
  3. Step 3: Cross multiply
    290,464.70x = 435,697.05 × 264,220.70
  4. Step 4: Simplify right side
    290,464.70x = 115,120,179,538.94
  5. Step 5: Solve for x
    x = 115,120,179,538.94/290,464.70
  6. Step 6: Final answer
    x = 396,331.05

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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.