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Finding the Fourth Proportional to 493,215.36, 680,636.16 and 266,860.80

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Solution

The fourth proportional to 493,215.36, 680,636.16 and 266,860.80 is: 368,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,215.36 : 680,636.16 = 266,860.80 : x
  2. Step 2: Convert to fraction form
    493,215.36/680,636.16 = 266,860.80/x
  3. Step 3: Cross multiply
    493,215.36x = 680,636.16 × 266,860.80
  4. Step 4: Simplify right side
    493,215.36x = 181,635,110,166.53
  5. Step 5: Solve for x
    x = 181,635,110,166.53/493,215.36
  6. Step 6: Final answer
    x = 368,267.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.