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Finding the Fourth Proportional to 385,650.67, 578,850.06 and 186,111.52

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Solution

The fourth proportional to 385,650.67, 578,850.06 and 186,111.52 is: 279,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,650.67 : 578,850.06 = 186,111.52 : x
  2. Step 2: Convert to fraction form
    385,650.67/578,850.06 = 186,111.52/x
  3. Step 3: Cross multiply
    385,650.67x = 578,850.06 × 186,111.52
  4. Step 4: Simplify right side
    385,650.67x = 107,730,664,518.69
  5. Step 5: Solve for x
    x = 107,730,664,518.69/385,650.67
  6. Step 6: Final answer
    x = 279,347.80

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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.