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Finding the Fourth Proportional to 551,803.56, 761,504.10 and 310,108.17

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Solution

The fourth proportional to 551,803.56, 761,504.10 and 310,108.17 is: 427,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,803.56 : 761,504.10 = 310,108.17 : x
  2. Step 2: Convert to fraction form
    551,803.56/761,504.10 = 310,108.17/x
  3. Step 3: Cross multiply
    551,803.56x = 761,504.10 × 310,108.17
  4. Step 4: Simplify right side
    551,803.56x = 236,148,642,898.50
  5. Step 5: Solve for x
    x = 236,148,642,898.50/551,803.56
  6. Step 6: Final answer
    x = 427,957.81

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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.