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Finding the Fourth Proportional to 401,854.80, 602,563.20 and 121,335.60

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Solution

The fourth proportional to 401,854.80, 602,563.20 and 121,335.60 is: 181,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,854.80 : 602,563.20 = 121,335.60 : x
  2. Step 2: Convert to fraction form
    401,854.80/602,563.20 = 121,335.60/x
  3. Step 3: Cross multiply
    401,854.80x = 602,563.20 × 121,335.60
  4. Step 4: Simplify right side
    401,854.80x = 73,112,367,409.92
  5. Step 5: Solve for x
    x = 73,112,367,409.92/401,854.80
  6. Step 6: Final answer
    x = 181,937.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.