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Finding the Fourth Proportional to 390,092.01, 538,337.10 and 228,953.85

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Solution

The fourth proportional to 390,092.01, 538,337.10 and 228,953.85 is: 315,962.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,092.01 : 538,337.10 = 228,953.85 : x
  2. Step 2: Convert to fraction form
    390,092.01/538,337.10 = 228,953.85/x
  3. Step 3: Cross multiply
    390,092.01x = 538,337.10 × 228,953.85
  4. Step 4: Simplify right side
    390,092.01x = 123,254,351,642.84
  5. Step 5: Solve for x
    x = 123,254,351,642.84/390,092.01
  6. Step 6: Final answer
    x = 315,962.26

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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.