Home / 280,021.48-386,503.14-159,233.32

Finding the Fourth Proportional to 280,021.48, 386,503.14 and 159,233.32

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Solution

The fourth proportional to 280,021.48, 386,503.14 and 159,233.32 is: 219,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,021.48 : 386,503.14 = 159,233.32 : x
  2. Step 2: Convert to fraction form
    280,021.48/386,503.14 = 159,233.32/x
  3. Step 3: Cross multiply
    280,021.48x = 386,503.14 × 159,233.32
  4. Step 4: Simplify right side
    280,021.48x = 61,544,178,172.62
  5. Step 5: Solve for x
    x = 61,544,178,172.62/280,021.48
  6. Step 6: Final answer
    x = 219,783.78

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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.