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Finding the Fourth Proportional to 280,603.76, 387,360.63 and 178,768.85

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Solution

The fourth proportional to 280,603.76, 387,360.63 and 178,768.85 is: 246,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,603.76 : 387,360.63 = 178,768.85 : x
  2. Step 2: Convert to fraction form
    280,603.76/387,360.63 = 178,768.85/x
  3. Step 3: Cross multiply
    280,603.76x = 387,360.63 × 178,768.85
  4. Step 4: Simplify right side
    280,603.76x = 69,248,012,423.57
  5. Step 5: Solve for x
    x = 69,248,012,423.57/280,603.76
  6. Step 6: Final answer
    x = 246,782.20

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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.