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Finding the Fourth Proportional to 493,646.40, 740,390.40 and 177,940.80

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Solution

The fourth proportional to 493,646.40, 740,390.40 and 177,940.80 is: 266,882.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,646.40 : 740,390.40 = 177,940.80 : x
  2. Step 2: Convert to fraction form
    493,646.40/740,390.40 = 177,940.80/x
  3. Step 3: Cross multiply
    493,646.40x = 740,390.40 × 177,940.80
  4. Step 4: Simplify right side
    493,646.40x = 131,745,660,088.32
  5. Step 5: Solve for x
    x = 131,745,660,088.32/493,646.40
  6. Step 6: Final answer
    x = 266,882.65

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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.