Home / 280,619.52-387,250.08-153,291.84

Finding the Fourth Proportional to 280,619.52, 387,250.08 and 153,291.84

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Solution

The fourth proportional to 280,619.52, 387,250.08 and 153,291.84 is: 211,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,619.52 : 387,250.08 = 153,291.84 : x
  2. Step 2: Convert to fraction form
    280,619.52/387,250.08 = 153,291.84/x
  3. Step 3: Cross multiply
    280,619.52x = 387,250.08 × 153,291.84
  4. Step 4: Simplify right side
    280,619.52x = 59,362,277,303.35
  5. Step 5: Solve for x
    x = 59,362,277,303.35/280,619.52
  6. Step 6: Final answer
    x = 211,540.09

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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.