Home / 399,547.18-551,391.87-229,781.44

Finding the Fourth Proportional to 399,547.18, 551,391.87 and 229,781.44

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Solution

The fourth proportional to 399,547.18, 551,391.87 and 229,781.44 is: 317,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,547.18 : 551,391.87 = 229,781.44 : x
  2. Step 2: Convert to fraction form
    399,547.18/551,391.87 = 229,781.44/x
  3. Step 3: Cross multiply
    399,547.18x = 551,391.87 × 229,781.44
  4. Step 4: Simplify right side
    399,547.18x = 126,699,617,892.89
  5. Step 5: Solve for x
    x = 126,699,617,892.89/399,547.18
  6. Step 6: Final answer
    x = 317,108.03

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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.