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Finding the Fourth Proportional to 280,745.52, 387,838.56 and 242,954.16

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Solution

The fourth proportional to 280,745.52, 387,838.56 and 242,954.16 is: 335,631.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,745.52 : 387,838.56 = 242,954.16 : x
  2. Step 2: Convert to fraction form
    280,745.52/387,838.56 = 242,954.16/x
  3. Step 3: Cross multiply
    280,745.52x = 387,838.56 × 242,954.16
  4. Step 4: Simplify right side
    280,745.52x = 94,226,991,560.41
  5. Step 5: Solve for x
    x = 94,226,991,560.41/280,745.52
  6. Step 6: Final answer
    x = 335,631.33

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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.