Home / 278,465.63-384,382.26-165,288.38

Finding the Fourth Proportional to 278,465.63, 384,382.26 and 165,288.38

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Solution

The fourth proportional to 278,465.63, 384,382.26 and 165,288.38 is: 228,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,465.63 : 384,382.26 = 165,288.38 : x
  2. Step 2: Convert to fraction form
    278,465.63/384,382.26 = 165,288.38/x
  3. Step 3: Cross multiply
    278,465.63x = 384,382.26 × 165,288.38
  4. Step 4: Simplify right side
    278,465.63x = 63,533,919,134.23
  5. Step 5: Solve for x
    x = 63,533,919,134.23/278,465.63
  6. Step 6: Final answer
    x = 228,157.13

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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.