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Finding the Fourth Proportional to 401,999.60, 602,999.40 and 165,220.40

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Solution

The fourth proportional to 401,999.60, 602,999.40 and 165,220.40 is: 247,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,999.60 : 602,999.40 = 165,220.40 : x
  2. Step 2: Convert to fraction form
    401,999.60/602,999.40 = 165,220.40/x
  3. Step 3: Cross multiply
    401,999.60x = 602,999.40 × 165,220.40
  4. Step 4: Simplify right side
    401,999.60x = 99,627,802,067.76
  5. Step 5: Solve for x
    x = 99,627,802,067.76/401,999.60
  6. Step 6: Final answer
    x = 247,830.60

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1.5x scale

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.