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Finding the Fourth Proportional to 349,827.20, 490,691.20 and 349,827.20

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Solution

The fourth proportional to 349,827.20, 490,691.20 and 349,827.20 is: 490,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,827.20 : 490,691.20 = 349,827.20 : x
  2. Step 2: Convert to fraction form
    349,827.20/490,691.20 = 349,827.20/x
  3. Step 3: Cross multiply
    349,827.20x = 490,691.20 × 349,827.20
  4. Step 4: Simplify right side
    349,827.20x = 171,657,128,560.64
  5. Step 5: Solve for x
    x = 171,657,128,560.64/349,827.20
  6. Step 6: Final answer
    x = 490,691.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.