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Finding the Fourth Proportional to 478,502.57, 660,362.93 and 263,642.58

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Solution

The fourth proportional to 478,502.57, 660,362.93 and 263,642.58 is: 363,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,502.57 : 660,362.93 = 263,642.58 : x
  2. Step 2: Convert to fraction form
    478,502.57/660,362.93 = 263,642.58/x
  3. Step 3: Cross multiply
    478,502.57x = 660,362.93 × 263,642.58
  4. Step 4: Simplify right side
    478,502.57x = 174,099,786,272.01
  5. Step 5: Solve for x
    x = 174,099,786,272.01/478,502.57
  6. Step 6: Final answer
    x = 363,842.95

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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.