Home / 278,470.40-384,284.32-151,143.28

Finding the Fourth Proportional to 278,470.40, 384,284.32 and 151,143.28

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Solution

The fourth proportional to 278,470.40, 384,284.32 and 151,143.28 is: 208,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,470.40 : 384,284.32 = 151,143.28 : x
  2. Step 2: Convert to fraction form
    278,470.40/384,284.32 = 151,143.28/x
  3. Step 3: Cross multiply
    278,470.40x = 384,284.32 × 151,143.28
  4. Step 4: Simplify right side
    278,470.40x = 58,081,992,577.37
  5. Step 5: Solve for x
    x = 58,081,992,577.37/278,470.40
  6. Step 6: Final answer
    x = 208,575.10

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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.