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Finding the Fourth Proportional to 358,805.88, 495,655.74 and 339,910.20

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Solution

The fourth proportional to 358,805.88, 495,655.74 and 339,910.20 is: 469,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,805.88 : 495,655.74 = 339,910.20 : x
  2. Step 2: Convert to fraction form
    358,805.88/495,655.74 = 339,910.20/x
  3. Step 3: Cross multiply
    358,805.88x = 495,655.74 × 339,910.20
  4. Step 4: Simplify right side
    358,805.88x = 168,478,441,714.55
  5. Step 5: Solve for x
    x = 168,478,441,714.55/358,805.88
  6. Step 6: Final answer
    x = 469,553.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.