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Finding the Fourth Proportional to 278,479.84, 384,302.60 and 151,155.52

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Solution

The fourth proportional to 278,479.84, 384,302.60 and 151,155.52 is: 208,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,479.84 : 384,302.60 = 151,155.52 : x
  2. Step 2: Convert to fraction form
    278,479.84/384,302.60 = 151,155.52/x
  3. Step 3: Cross multiply
    278,479.84x = 384,302.60 × 151,155.52
  4. Step 4: Simplify right side
    278,479.84x = 58,089,459,340.35
  5. Step 5: Solve for x
    x = 58,089,459,340.35/278,479.84
  6. Step 6: Final answer
    x = 208,594.85

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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.