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Finding the Fourth Proportional to 297,457.88, 445,336.62 and 278,603.21

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Solution

The fourth proportional to 297,457.88, 445,336.62 and 278,603.21 is: 417,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,457.88 : 445,336.62 = 278,603.21 : x
  2. Step 2: Convert to fraction form
    297,457.88/445,336.62 = 278,603.21/x
  3. Step 3: Cross multiply
    297,457.88x = 445,336.62 × 278,603.21
  4. Step 4: Simplify right side
    297,457.88x = 124,072,211,776.83
  5. Step 5: Solve for x
    x = 124,072,211,776.83/297,457.88
  6. Step 6: Final answer
    x = 417,108.50

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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.