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Finding the Fourth Proportional to 297,740.40, 445,919.40 and 290,828.40

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Solution

The fourth proportional to 297,740.40, 445,919.40 and 290,828.40 is: 435,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,740.40 : 445,919.40 = 290,828.40 : x
  2. Step 2: Convert to fraction form
    297,740.40/445,919.40 = 290,828.40/x
  3. Step 3: Cross multiply
    297,740.40x = 445,919.40 × 290,828.40
  4. Step 4: Simplify right side
    297,740.40x = 129,686,025,630.96
  5. Step 5: Solve for x
    x = 129,686,025,630.96/297,740.40
  6. Step 6: Final answer
    x = 435,567.45

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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.