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Finding the Fourth Proportional to 478,665.12, 660,544.90 and 263,805.13

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Solution

The fourth proportional to 478,665.12, 660,544.90 and 263,805.13 is: 364,043.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,665.12 : 660,544.90 = 263,805.13 : x
  2. Step 2: Convert to fraction form
    478,665.12/660,544.90 = 263,805.13/x
  3. Step 3: Cross multiply
    478,665.12x = 660,544.90 × 263,805.13
  4. Step 4: Simplify right side
    478,665.12x = 174,255,133,215.34
  5. Step 5: Solve for x
    x = 174,255,133,215.34/478,665.12
  6. Step 6: Final answer
    x = 364,043.93

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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.