Home / 280,297.07-386,818.98-159,435.25

Finding the Fourth Proportional to 280,297.07, 386,818.98 and 159,435.25

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Solution

The fourth proportional to 280,297.07, 386,818.98 and 159,435.25 is: 220,025.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,297.07 : 386,818.98 = 159,435.25 : x
  2. Step 2: Convert to fraction form
    280,297.07/386,818.98 = 159,435.25/x
  3. Step 3: Cross multiply
    280,297.07x = 386,818.98 × 159,435.25
  4. Step 4: Simplify right side
    280,297.07x = 61,672,579,216.12
  5. Step 5: Solve for x
    x = 61,672,579,216.12/280,297.07
  6. Step 6: Final answer
    x = 220,025.77

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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.