Home / 278,740.56-384,718-165,541.44

Finding the Fourth Proportional to 278,740.56, 384,718 and 165,541.44

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Solution

The fourth proportional to 278,740.56, 384,718 and 165,541.44 is: 228,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,740.56 : 384,718 = 165,541.44 : x
  2. Step 2: Convert to fraction form
    278,740.56/384,718 = 165,541.44/x
  3. Step 3: Cross multiply
    278,740.56x = 384,718 × 165,541.44
  4. Step 4: Simplify right side
    278,740.56x = 63,686,771,713.92
  5. Step 5: Solve for x
    x = 63,686,771,713.92/278,740.56
  6. Step 6: Final answer
    x = 228,480.46

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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.