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Finding the Fourth Proportional to 399,012.48, 598,618.96 and 114,703.54

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Solution

The fourth proportional to 399,012.48, 598,618.96 and 114,703.54 is: 172,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,012.48 : 598,618.96 = 114,703.54 : x
  2. Step 2: Convert to fraction form
    399,012.48/598,618.96 = 114,703.54/x
  3. Step 3: Cross multiply
    399,012.48x = 598,618.96 × 114,703.54
  4. Step 4: Simplify right side
    399,012.48x = 68,663,714,913.67
  5. Step 5: Solve for x
    x = 68,663,714,913.67/399,012.48
  6. Step 6: Final answer
    x = 172,084.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.