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Finding the Fourth Proportional to 399,492.66, 551,156.62 and 236,114.88

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Solution

The fourth proportional to 399,492.66, 551,156.62 and 236,114.88 is: 325,753.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,492.66 : 551,156.62 = 236,114.88 : x
  2. Step 2: Convert to fraction form
    399,492.66/551,156.62 = 236,114.88/x
  3. Step 3: Cross multiply
    399,492.66x = 551,156.62 × 236,114.88
  4. Step 4: Simplify right side
    399,492.66x = 130,136,279,192.51
  5. Step 5: Solve for x
    x = 130,136,279,192.51/399,492.66
  6. Step 6: Final answer
    x = 325,753.87

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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.