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Finding the Fourth Proportional to 251,911.98, 347,670.30 and 144,479.70

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Solution

The fourth proportional to 251,911.98, 347,670.30 and 144,479.70 is: 199,400.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,911.98 : 347,670.30 = 144,479.70 : x
  2. Step 2: Convert to fraction form
    251,911.98/347,670.30 = 144,479.70/x
  3. Step 3: Cross multiply
    251,911.98x = 347,670.30 × 144,479.70
  4. Step 4: Simplify right side
    251,911.98x = 50,231,300,642.91
  5. Step 5: Solve for x
    x = 50,231,300,642.91/251,911.98
  6. Step 6: Final answer
    x = 199,400.21

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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.