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Finding the Fourth Proportional to 278,492.59, 384,320.24 and 151,168.15

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Solution

The fourth proportional to 278,492.59, 384,320.24 and 151,168.15 is: 208,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,492.59 : 384,320.24 = 151,168.15 : x
  2. Step 2: Convert to fraction form
    278,492.59/384,320.24 = 151,168.15/x
  3. Step 3: Cross multiply
    278,492.59x = 384,320.24 × 151,168.15
  4. Step 4: Simplify right side
    278,492.59x = 58,096,979,688.36
  5. Step 5: Solve for x
    x = 58,096,979,688.36/278,492.59
  6. Step 6: Final answer
    x = 208,612.30

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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.