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Finding the Fourth Proportional to 395,018.26, 545,121.32 and 213,726.22

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Solution

The fourth proportional to 395,018.26, 545,121.32 and 213,726.22 is: 294,940.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,018.26 : 545,121.32 = 213,726.22 : x
  2. Step 2: Convert to fraction form
    395,018.26/545,121.32 = 213,726.22/x
  3. Step 3: Cross multiply
    395,018.26x = 545,121.32 × 213,726.22
  4. Step 4: Simplify right side
    395,018.26x = 116,506,719,165.01
  5. Step 5: Solve for x
    x = 116,506,719,165.01/395,018.26
  6. Step 6: Final answer
    x = 294,940.08

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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.