Home / 278,730.42-384,628.96-151,403.28

Finding the Fourth Proportional to 278,730.42, 384,628.96 and 151,403.28

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Solution

The fourth proportional to 278,730.42, 384,628.96 and 151,403.28 is: 208,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,730.42 : 384,628.96 = 151,403.28 : x
  2. Step 2: Convert to fraction form
    278,730.42/384,628.96 = 151,403.28/x
  3. Step 3: Cross multiply
    278,730.42x = 384,628.96 × 151,403.28
  4. Step 4: Simplify right side
    278,730.42x = 58,234,086,126.99
  5. Step 5: Solve for x
    x = 58,234,086,126.99/278,730.42
  6. Step 6: Final answer
    x = 208,926.20

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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.