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Finding the Fourth Proportional to 298,649.58, 412,539.57 and 238,641.18

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Solution

The fourth proportional to 298,649.58, 412,539.57 and 238,641.18 is: 329,646.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,649.58 : 412,539.57 = 238,641.18 : x
  2. Step 2: Convert to fraction form
    298,649.58/412,539.57 = 238,641.18/x
  3. Step 3: Cross multiply
    298,649.58x = 412,539.57 × 238,641.18
  4. Step 4: Simplify right side
    298,649.58x = 98,448,929,781.49
  5. Step 5: Solve for x
    x = 98,448,929,781.49/298,649.58
  6. Step 6: Final answer
    x = 329,646.97

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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.