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Finding the Fourth Proportional to 551,021.60, 824,955.60 and 339,233.60

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Solution

The fourth proportional to 551,021.60, 824,955.60 and 339,233.60 is: 507,879.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,021.60 : 824,955.60 = 339,233.60 : x
  2. Step 2: Convert to fraction form
    551,021.60/824,955.60 = 339,233.60/x
  3. Step 3: Cross multiply
    551,021.60x = 824,955.60 × 339,233.60
  4. Step 4: Simplify right side
    551,021.60x = 279,852,658,028.16
  5. Step 5: Solve for x
    x = 279,852,658,028.16/551,021.60
  6. Step 6: Final answer
    x = 507,879.65

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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.