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Finding the Fourth Proportional to 385,649.67, 578,848.56 and 186,110.52

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Solution

The fourth proportional to 385,649.67, 578,848.56 and 186,110.52 is: 279,346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,649.67 : 578,848.56 = 186,110.52 : x
  2. Step 2: Convert to fraction form
    385,649.67/578,848.56 = 186,110.52/x
  3. Step 3: Cross multiply
    385,649.67x = 578,848.56 × 186,110.52
  4. Step 4: Simplify right side
    385,649.67x = 107,729,806,502.85
  5. Step 5: Solve for x
    x = 107,729,806,502.85/385,649.67
  6. Step 6: Final answer
    x = 279,346.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.