Home / 399,953.23-551,929.58-218,665.87

Finding the Fourth Proportional to 399,953.23, 551,929.58 and 218,665.87

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Solution

The fourth proportional to 399,953.23, 551,929.58 and 218,665.87 is: 301,755.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,953.23 : 551,929.58 = 218,665.87 : x
  2. Step 2: Convert to fraction form
    399,953.23/551,929.58 = 218,665.87/x
  3. Step 3: Cross multiply
    399,953.23x = 551,929.58 × 218,665.87
  4. Step 4: Simplify right side
    399,953.23x = 120,688,160,136.28
  5. Step 5: Solve for x
    x = 120,688,160,136.28/399,953.23
  6. Step 6: Final answer
    x = 301,755.69

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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.