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Finding the Fourth Proportional to 478,834.66, 660,774.82 and 261,038.83

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Solution

The fourth proportional to 478,834.66, 660,774.82 and 261,038.83 is: 360,224.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,834.66 : 660,774.82 = 261,038.83 : x
  2. Step 2: Convert to fraction form
    478,834.66/660,774.82 = 261,038.83/x
  3. Step 3: Cross multiply
    478,834.66x = 660,774.82 × 261,038.83
  4. Step 4: Simplify right side
    478,834.66x = 172,487,885,906.26
  5. Step 5: Solve for x
    x = 172,487,885,906.26/478,834.66
  6. Step 6: Final answer
    x = 360,224.31

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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.