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Finding the Fourth Proportional to 395,458.48, 545,729.96 and 214,166.28

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Solution

The fourth proportional to 395,458.48, 545,729.96 and 214,166.28 is: 295,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,458.48 : 545,729.96 = 214,166.28 : x
  2. Step 2: Convert to fraction form
    395,458.48/545,729.96 = 214,166.28/x
  3. Step 3: Cross multiply
    395,458.48x = 545,729.96 × 214,166.28
  4. Step 4: Simplify right side
    395,458.48x = 116,876,955,417.75
  5. Step 5: Solve for x
    x = 116,876,955,417.75/395,458.48
  6. Step 6: Final answer
    x = 295,547.98

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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.