Home / 399,282.18-551,000.98-217,985.34

Finding the Fourth Proportional to 399,282.18, 551,000.98 and 217,985.34

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Solution

The fourth proportional to 399,282.18, 551,000.98 and 217,985.34 is: 300,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,282.18 : 551,000.98 = 217,985.34 : x
  2. Step 2: Convert to fraction form
    399,282.18/551,000.98 = 217,985.34/x
  3. Step 3: Cross multiply
    399,282.18x = 551,000.98 × 217,985.34
  4. Step 4: Simplify right side
    399,282.18x = 120,110,135,965.63
  5. Step 5: Solve for x
    x = 120,110,135,965.63/399,282.18
  6. Step 6: Final answer
    x = 300,815.17

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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.