Home / 280,840.42-387,465.15-159,896.13

Finding the Fourth Proportional to 280,840.42, 387,465.15 and 159,896.13

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Solution

The fourth proportional to 280,840.42, 387,465.15 and 159,896.13 is: 220,602.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,840.42 : 387,465.15 = 159,896.13 : x
  2. Step 2: Convert to fraction form
    280,840.42/387,465.15 = 159,896.13/x
  3. Step 3: Cross multiply
    280,840.42x = 387,465.15 × 159,896.13
  4. Step 4: Simplify right side
    280,840.42x = 61,954,177,994.87
  5. Step 5: Solve for x
    x = 61,954,177,994.87/280,840.42
  6. Step 6: Final answer
    x = 220,602.78

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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.