Home / 280,172.32-386,635.96-159,313.61

Finding the Fourth Proportional to 280,172.32, 386,635.96 and 159,313.61

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Solution

The fourth proportional to 280,172.32, 386,635.96 and 159,313.61 is: 219,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,172.32 : 386,635.96 = 159,313.61 : x
  2. Step 2: Convert to fraction form
    280,172.32/386,635.96 = 159,313.61/x
  3. Step 3: Cross multiply
    280,172.32x = 386,635.96 × 159,313.61
  4. Step 4: Simplify right side
    280,172.32x = 61,596,371,111.72
  5. Step 5: Solve for x
    x = 61,596,371,111.72/280,172.32
  6. Step 6: Final answer
    x = 219,851.74

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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.