Home / 278,531.64-384,378.30-151,207.23

Finding the Fourth Proportional to 278,531.64, 384,378.30 and 151,207.23

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Solution

The fourth proportional to 278,531.64, 384,378.30 and 151,207.23 is: 208,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,531.64 : 384,378.30 = 151,207.23 : x
  2. Step 2: Convert to fraction form
    278,531.64/384,378.30 = 151,207.23/x
  3. Step 3: Cross multiply
    278,531.64x = 384,378.30 × 151,207.23
  4. Step 4: Simplify right side
    278,531.64x = 58,120,778,015.11
  5. Step 5: Solve for x
    x = 58,120,778,015.11/278,531.64
  6. Step 6: Final answer
    x = 208,668.49

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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.