Home / 399,637.14-551,492.82-218,345.18

Finding the Fourth Proportional to 399,637.14, 551,492.82 and 218,345.18

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Solution

The fourth proportional to 399,637.14, 551,492.82 and 218,345.18 is: 301,312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,637.14 : 551,492.82 = 218,345.18 : x
  2. Step 2: Convert to fraction form
    399,637.14/551,492.82 = 218,345.18/x
  3. Step 3: Cross multiply
    399,637.14x = 551,492.82 × 218,345.18
  4. Step 4: Simplify right side
    399,637.14x = 120,415,799,051.61
  5. Step 5: Solve for x
    x = 120,415,799,051.61/399,637.14
  6. Step 6: Final answer
    x = 301,312.83

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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.