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Finding the Fourth Proportional to 389,912.08, 584,889.44 and 123,653.32

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Solution

The fourth proportional to 389,912.08, 584,889.44 and 123,653.32 is: 185,486.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,912.08 : 584,889.44 = 123,653.32 : x
  2. Step 2: Convert to fraction form
    389,912.08/584,889.44 = 123,653.32/x
  3. Step 3: Cross multiply
    389,912.08x = 584,889.44 × 123,653.32
  4. Step 4: Simplify right side
    389,912.08x = 72,323,521,088.94
  5. Step 5: Solve for x
    x = 72,323,521,088.94/389,912.08
  6. Step 6: Final answer
    x = 185,486.74

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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.