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Finding the Fourth Proportional to 395,404.69, 545,657.48 and 214,116.61

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Solution

The fourth proportional to 395,404.69, 545,657.48 and 214,116.61 is: 295,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,404.69 : 545,657.48 = 214,116.61 : x
  2. Step 2: Convert to fraction form
    395,404.69/545,657.48 = 214,116.61/x
  3. Step 3: Cross multiply
    395,404.69x = 545,657.48 × 214,116.61
  4. Step 4: Simplify right side
    395,404.69x = 116,834,329,838.74
  5. Step 5: Solve for x
    x = 116,834,329,838.74/395,404.69
  6. Step 6: Final answer
    x = 295,480.38

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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.