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Finding the Fourth Proportional to 268,838.60, 403,476.60 and 260,090.60

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Solution

The fourth proportional to 268,838.60, 403,476.60 and 260,090.60 is: 390,347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,838.60 : 403,476.60 = 260,090.60 : x
  2. Step 2: Convert to fraction form
    268,838.60/403,476.60 = 260,090.60/x
  3. Step 3: Cross multiply
    268,838.60x = 403,476.60 × 260,090.60
  4. Step 4: Simplify right side
    268,838.60x = 104,940,470,979.96
  5. Step 5: Solve for x
    x = 104,940,470,979.96/268,838.60
  6. Step 6: Final answer
    x = 390,347.48

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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.