Home / 280,947.15-387,447.30-190,434.51

Finding the Fourth Proportional to 280,947.15, 387,447.30 and 190,434.51

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Solution

The fourth proportional to 280,947.15, 387,447.30 and 190,434.51 is: 262,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,947.15 : 387,447.30 = 190,434.51 : x
  2. Step 2: Convert to fraction form
    280,947.15/387,447.30 = 190,434.51/x
  3. Step 3: Cross multiply
    280,947.15x = 387,447.30 × 190,434.51
  4. Step 4: Simplify right side
    280,947.15x = 73,783,336,726.32
  5. Step 5: Solve for x
    x = 73,783,336,726.32/280,947.15
  6. Step 6: Final answer
    x = 262,623.55

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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.