Home / 280,539.02-387,146.32-159,688.09

Finding the Fourth Proportional to 280,539.02, 387,146.32 and 159,688.09

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Solution

The fourth proportional to 280,539.02, 387,146.32 and 159,688.09 is: 220,370.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,539.02 : 387,146.32 = 159,688.09 : x
  2. Step 2: Convert to fraction form
    280,539.02/387,146.32 = 159,688.09/x
  3. Step 3: Cross multiply
    280,539.02x = 387,146.32 × 159,688.09
  4. Step 4: Simplify right side
    280,539.02x = 61,822,655,024.24
  5. Step 5: Solve for x
    x = 61,822,655,024.24/280,539.02
  6. Step 6: Final answer
    x = 220,370.96

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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.