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Finding the Fourth Proportional to 401,862.80, 602,575.20 and 121,343.60

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Solution

The fourth proportional to 401,862.80, 602,575.20 and 121,343.60 is: 181,949.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,862.80 : 602,575.20 = 121,343.60 : x
  2. Step 2: Convert to fraction form
    401,862.80/602,575.20 = 121,343.60/x
  3. Step 3: Cross multiply
    401,862.80x = 602,575.20 × 121,343.60
  4. Step 4: Simplify right side
    401,862.80x = 73,118,644,038.72
  5. Step 5: Solve for x
    x = 73,118,644,038.72/401,862.80
  6. Step 6: Final answer
    x = 181,949.27

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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.