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Finding the Fourth Proportional to 371,998.80, 558,019.80 and 105,778.80

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Solution

The fourth proportional to 371,998.80, 558,019.80 and 105,778.80 is: 158,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,998.80 : 558,019.80 = 105,778.80 : x
  2. Step 2: Convert to fraction form
    371,998.80/558,019.80 = 105,778.80/x
  3. Step 3: Cross multiply
    371,998.80x = 558,019.80 × 105,778.80
  4. Step 4: Simplify right side
    371,998.80x = 59,026,664,820.24
  5. Step 5: Solve for x
    x = 59,026,664,820.24/371,998.80
  6. Step 6: Final answer
    x = 158,674.34

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1.5x scale

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.