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Finding the Fourth Proportional to 478,782.18, 660,689.73 and 263,911.14

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Solution

The fourth proportional to 478,782.18, 660,689.73 and 263,911.14 is: 364,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,782.18 : 660,689.73 = 263,911.14 : x
  2. Step 2: Convert to fraction form
    478,782.18/660,689.73 = 263,911.14/x
  3. Step 3: Cross multiply
    478,782.18x = 660,689.73 × 263,911.14
  4. Step 4: Simplify right side
    478,782.18x = 174,363,379,830.59
  5. Step 5: Solve for x
    x = 174,363,379,830.59/478,782.18
  6. Step 6: Final answer
    x = 364,181.01

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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.