Home / 399,484.18-551,285.36-218,196.16

Finding the Fourth Proportional to 399,484.18, 551,285.36 and 218,196.16

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Solution

The fourth proportional to 399,484.18, 551,285.36 and 218,196.16 is: 301,109.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,484.18 : 551,285.36 = 218,196.16 : x
  2. Step 2: Convert to fraction form
    399,484.18/551,285.36 = 218,196.16/x
  3. Step 3: Cross multiply
    399,484.18x = 551,285.36 × 218,196.16
  4. Step 4: Simplify right side
    399,484.18x = 120,288,346,965.26
  5. Step 5: Solve for x
    x = 120,288,346,965.26/399,484.18
  6. Step 6: Final answer
    x = 301,109.16

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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.