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Finding the Fourth Proportional to 320,726.48, 442,572.48 and 191,639.25

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Solution

The fourth proportional to 320,726.48, 442,572.48 and 191,639.25 is: 264,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,726.48 : 442,572.48 = 191,639.25 : x
  2. Step 2: Convert to fraction form
    320,726.48/442,572.48 = 191,639.25/x
  3. Step 3: Cross multiply
    320,726.48x = 442,572.48 × 191,639.25
  4. Step 4: Simplify right side
    320,726.48x = 84,814,258,137.84
  5. Step 5: Solve for x
    x = 84,814,258,137.84/320,726.48
  6. Step 6: Final answer
    x = 264,444.21

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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.