Home / 278,464.87-384,281.81-151,140.49

Finding the Fourth Proportional to 278,464.87, 384,281.81 and 151,140.49

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Solution

The fourth proportional to 278,464.87, 384,281.81 and 151,140.49 is: 208,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,464.87 : 384,281.81 = 151,140.49 : x
  2. Step 2: Convert to fraction form
    278,464.87/384,281.81 = 151,140.49/x
  3. Step 3: Cross multiply
    278,464.87x = 384,281.81 × 151,140.49
  4. Step 4: Simplify right side
    278,464.87x = 58,080,540,305.78
  5. Step 5: Solve for x
    x = 58,080,540,305.78/278,464.87
  6. Step 6: Final answer
    x = 208,574.03

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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.