Home / 278,395.71-384,187.11-151,071.30

Finding the Fourth Proportional to 278,395.71, 384,187.11 and 151,071.30

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Solution

The fourth proportional to 278,395.71, 384,187.11 and 151,071.30 is: 208,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,395.71 : 384,187.11 = 151,071.30 : x
  2. Step 2: Convert to fraction form
    278,395.71/384,187.11 = 151,071.30/x
  3. Step 3: Cross multiply
    278,395.71x = 384,187.11 × 151,071.30
  4. Step 4: Simplify right side
    278,395.71x = 58,039,646,150.94
  5. Step 5: Solve for x
    x = 58,039,646,150.94/278,395.71
  6. Step 6: Final answer
    x = 208,478.95

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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.