Home / 278,927.28-384,801.84-165,728.16

Finding the Fourth Proportional to 278,927.28, 384,801.84 and 165,728.16

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Solution

The fourth proportional to 278,927.28, 384,801.84 and 165,728.16 is: 228,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,927.28 : 384,801.84 = 165,728.16 : x
  2. Step 2: Convert to fraction form
    278,927.28/384,801.84 = 165,728.16/x
  3. Step 3: Cross multiply
    278,927.28x = 384,801.84 × 165,728.16
  4. Step 4: Simplify right side
    278,927.28x = 63,772,500,907.81
  5. Step 5: Solve for x
    x = 63,772,500,907.81/278,927.28
  6. Step 6: Final answer
    x = 228,634.86

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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.