Home / 280,438.77-387,033.21-165,755.19

Finding the Fourth Proportional to 280,438.77, 387,033.21 and 165,755.19

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Solution

The fourth proportional to 280,438.77, 387,033.21 and 165,755.19 is: 228,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,438.77 : 387,033.21 = 165,755.19 : x
  2. Step 2: Convert to fraction form
    280,438.77/387,033.21 = 165,755.19/x
  3. Step 3: Cross multiply
    280,438.77x = 387,033.21 × 165,755.19
  4. Step 4: Simplify right side
    280,438.77x = 64,152,763,259.86
  5. Step 5: Solve for x
    x = 64,152,763,259.86/280,438.77
  6. Step 6: Final answer
    x = 228,758.54

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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.