Home / 280,539.06-387,146.37-159,688.12

Finding the Fourth Proportional to 280,539.06, 387,146.37 and 159,688.12

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Solution

The fourth proportional to 280,539.06, 387,146.37 and 159,688.12 is: 220,371.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,539.06 : 387,146.37 = 159,688.12 : x
  2. Step 2: Convert to fraction form
    280,539.06/387,146.37 = 159,688.12/x
  3. Step 3: Cross multiply
    280,539.06x = 387,146.37 × 159,688.12
  4. Step 4: Simplify right side
    280,539.06x = 61,822,675,990.12
  5. Step 5: Solve for x
    x = 61,822,675,990.12/280,539.06
  6. Step 6: Final answer
    x = 220,371.01

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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.