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Finding the Fourth Proportional to 448,720.17, 672,702.77 and 208,712.11

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Solution

The fourth proportional to 448,720.17, 672,702.77 and 208,712.11 is: 312,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,720.17 : 672,702.77 = 208,712.11 : x
  2. Step 2: Convert to fraction form
    448,720.17/672,702.77 = 208,712.11/x
  3. Step 3: Cross multiply
    448,720.17x = 672,702.77 × 208,712.11
  4. Step 4: Simplify right side
    448,720.17x = 140,401,214,630.89
  5. Step 5: Solve for x
    x = 140,401,214,630.89/448,720.17
  6. Step 6: Final answer
    x = 312,892.59

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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.