Home / 278,926.78-384,921.30-151,602.34

Finding the Fourth Proportional to 278,926.78, 384,921.30 and 151,602.34

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Solution

The fourth proportional to 278,926.78, 384,921.30 and 151,602.34 is: 209,212.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,926.78 : 384,921.30 = 151,602.34 : x
  2. Step 2: Convert to fraction form
    278,926.78/384,921.30 = 151,602.34/x
  3. Step 3: Cross multiply
    278,926.78x = 384,921.30 × 151,602.34
  4. Step 4: Simplify right side
    278,926.78x = 58,354,969,795.84
  5. Step 5: Solve for x
    x = 58,354,969,795.84/278,926.78
  6. Step 6: Final answer
    x = 209,212.50

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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.