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Finding the Fourth Proportional to 478,996.74, 661,001.31 and 264,136.77

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Solution

The fourth proportional to 478,996.74, 661,001.31 and 264,136.77 is: 364,500.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,996.74 : 661,001.31 = 264,136.77 : x
  2. Step 2: Convert to fraction form
    478,996.74/661,001.31 = 264,136.77/x
  3. Step 3: Cross multiply
    478,996.74x = 661,001.31 × 264,136.77
  4. Step 4: Simplify right side
    478,996.74x = 174,594,750,989.17
  5. Step 5: Solve for x
    x = 174,594,750,989.17/478,996.74
  6. Step 6: Final answer
    x = 364,500.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.