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Finding the Fourth Proportional to 395,265.25, 545,461.53 and 213,973.21

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Solution

The fourth proportional to 395,265.25, 545,461.53 and 213,973.21 is: 295,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,265.25 : 545,461.53 = 213,973.21 : x
  2. Step 2: Convert to fraction form
    395,265.25/545,461.53 = 213,973.21/x
  3. Step 3: Cross multiply
    395,265.25x = 545,461.53 × 213,973.21
  4. Step 4: Simplify right side
    395,265.25x = 116,714,154,385.04
  5. Step 5: Solve for x
    x = 116,714,154,385.04/395,265.25
  6. Step 6: Final answer
    x = 295,280.58

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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.