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Finding the Fourth Proportional to 278,661.42, 384,712.17 and 183,444.91

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Solution

The fourth proportional to 278,661.42, 384,712.17 and 183,444.91 is: 253,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,661.42 : 384,712.17 = 183,444.91 : x
  2. Step 2: Convert to fraction form
    278,661.42/384,712.17 = 183,444.91/x
  3. Step 3: Cross multiply
    278,661.42x = 384,712.17 × 183,444.91
  4. Step 4: Simplify right side
    278,661.42x = 70,573,487,751.86
  5. Step 5: Solve for x
    x = 70,573,487,751.86/278,661.42
  6. Step 6: Final answer
    x = 253,258.91

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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.