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Finding the Fourth Proportional to 478,640.04, 660,515.14 and 263,775.52

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Solution

The fourth proportional to 478,640.04, 660,515.14 and 263,775.52 is: 364,005.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,640.04 : 660,515.14 = 263,775.52 : x
  2. Step 2: Convert to fraction form
    478,640.04/660,515.14 = 263,775.52/x
  3. Step 3: Cross multiply
    478,640.04x = 660,515.14 × 263,775.52
  4. Step 4: Simplify right side
    478,640.04x = 174,227,724,521.37
  5. Step 5: Solve for x
    x = 174,227,724,521.37/478,640.04
  6. Step 6: Final answer
    x = 364,005.75

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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.