Home / 280,840.95-387,465.93-159,896.70

Finding the Fourth Proportional to 280,840.95, 387,465.93 and 159,896.70

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Solution

The fourth proportional to 280,840.95, 387,465.93 and 159,896.70 is: 220,603.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,840.95 : 387,465.93 = 159,896.70 : x
  2. Step 2: Convert to fraction form
    280,840.95/387,465.93 = 159,896.70/x
  3. Step 3: Cross multiply
    280,840.95x = 387,465.93 × 159,896.70
  4. Step 4: Simplify right side
    280,840.95x = 61,954,523,569.43
  5. Step 5: Solve for x
    x = 61,954,523,569.43/280,840.95
  6. Step 6: Final answer
    x = 220,603.60

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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.