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Finding the Fourth Proportional to 395,032.39, 545,140.82 and 213,740.34

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Solution

The fourth proportional to 395,032.39, 545,140.82 and 213,740.34 is: 294,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,032.39 : 545,140.82 = 213,740.34 : x
  2. Step 2: Convert to fraction form
    395,032.39/545,140.82 = 213,740.34/x
  3. Step 3: Cross multiply
    395,032.39x = 545,140.82 × 213,740.34
  4. Step 4: Simplify right side
    395,032.39x = 116,518,587,003.81
  5. Step 5: Solve for x
    x = 116,518,587,003.81/395,032.39
  6. Step 6: Final answer
    x = 294,959.58

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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.