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Finding the Fourth Proportional to 278,482.90, 384,308.33 and 151,158.46

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Solution

The fourth proportional to 278,482.90, 384,308.33 and 151,158.46 is: 208,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,482.90 : 384,308.33 = 151,158.46 : x
  2. Step 2: Convert to fraction form
    278,482.90/384,308.33 = 151,158.46/x
  3. Step 3: Cross multiply
    278,482.90x = 384,308.33 × 151,158.46
  4. Step 4: Simplify right side
    278,482.90x = 58,091,455,327.97
  5. Step 5: Solve for x
    x = 58,091,455,327.97/278,482.90
  6. Step 6: Final answer
    x = 208,599.72

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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.