Home / 642,678.36-964,152.40-193,432.11

Finding the Fourth Proportional to 642,678.36, 964,152.40 and 193,432.11

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Solution

The fourth proportional to 642,678.36, 964,152.40 and 193,432.11 is: 290,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,678.36 : 964,152.40 = 193,432.11 : x
  2. Step 2: Convert to fraction form
    642,678.36/964,152.40 = 193,432.11/x
  3. Step 3: Cross multiply
    642,678.36x = 964,152.40 × 193,432.11
  4. Step 4: Simplify right side
    642,678.36x = 186,498,033,093.56
  5. Step 5: Solve for x
    x = 186,498,033,093.56/642,678.36
  6. Step 6: Final answer
    x = 290,188.75

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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.