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Finding the Fourth Proportional to 290,286.39, 435,457.08 and 112,807.10

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Solution

The fourth proportional to 290,286.39, 435,457.08 and 112,807.10 is: 169,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,286.39 : 435,457.08 = 112,807.10 : x
  2. Step 2: Convert to fraction form
    290,286.39/435,457.08 = 112,807.10/x
  3. Step 3: Cross multiply
    290,286.39x = 435,457.08 × 112,807.10
  4. Step 4: Simplify right side
    290,286.39x = 49,122,648,191.98
  5. Step 5: Solve for x
    x = 49,122,648,191.98/290,286.39
  6. Step 6: Final answer
    x = 169,221.33

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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.