Home / 280,539.29-387,146.69-159,688.36

Finding the Fourth Proportional to 280,539.29, 387,146.69 and 159,688.36

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Solution

The fourth proportional to 280,539.29, 387,146.69 and 159,688.36 is: 220,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,539.29 : 387,146.69 = 159,688.36 : x
  2. Step 2: Convert to fraction form
    280,539.29/387,146.69 = 159,688.36/x
  3. Step 3: Cross multiply
    280,539.29x = 387,146.69 × 159,688.36
  4. Step 4: Simplify right side
    280,539.29x = 61,822,820,289.85
  5. Step 5: Solve for x
    x = 61,822,820,289.85/280,539.29
  6. Step 6: Final answer
    x = 220,371.34

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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.