Home / 280,501.02-387,091.06-165,821

Finding the Fourth Proportional to 280,501.02, 387,091.06 and 165,821

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Solution

The fourth proportional to 280,501.02, 387,091.06 and 165,821 is: 228,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,501.02 : 387,091.06 = 165,821 : x
  2. Step 2: Convert to fraction form
    280,501.02/387,091.06 = 165,821/x
  3. Step 3: Cross multiply
    280,501.02x = 387,091.06 × 165,821
  4. Step 4: Simplify right side
    280,501.02x = 64,187,826,660.26
  5. Step 5: Solve for x
    x = 64,187,826,660.26/280,501.02
  6. Step 6: Final answer
    x = 228,832.77

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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.