Home / 280,426.76-387,033.36-178,345.80

Finding the Fourth Proportional to 280,426.76, 387,033.36 and 178,345.80

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Solution

The fourth proportional to 280,426.76, 387,033.36 and 178,345.80 is: 246,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,426.76 : 387,033.36 = 178,345.80 : x
  2. Step 2: Convert to fraction form
    280,426.76/387,033.36 = 178,345.80/x
  3. Step 3: Cross multiply
    280,426.76x = 387,033.36 × 178,345.80
  4. Step 4: Simplify right side
    280,426.76x = 69,025,774,215.89
  5. Step 5: Solve for x
    x = 69,025,774,215.89/280,426.76
  6. Step 6: Final answer
    x = 246,145.46

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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.