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Finding the Fourth Proportional to 268,999.60, 403,345.80 and 111,041.20

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Solution

The fourth proportional to 268,999.60, 403,345.80 and 111,041.20 is: 166,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,999.60 : 403,345.80 = 111,041.20 : x
  2. Step 2: Convert to fraction form
    268,999.60/403,345.80 = 111,041.20/x
  3. Step 3: Cross multiply
    268,999.60x = 403,345.80 × 111,041.20
  4. Step 4: Simplify right side
    268,999.60x = 44,788,001,646.96
  5. Step 5: Solve for x
    x = 44,788,001,646.96/268,999.60
  6. Step 6: Final answer
    x = 166,498.39

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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.