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Finding the Fourth Proportional to 384,015.40, 576,023.10 and 265,653.80

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Solution

The fourth proportional to 384,015.40, 576,023.10 and 265,653.80 is: 398,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,015.40 : 576,023.10 = 265,653.80 : x
  2. Step 2: Convert to fraction form
    384,015.40/576,023.10 = 265,653.80/x
  3. Step 3: Cross multiply
    384,015.40x = 576,023.10 × 265,653.80
  4. Step 4: Simplify right side
    384,015.40x = 153,022,725,402.78
  5. Step 5: Solve for x
    x = 153,022,725,402.78/384,015.40
  6. Step 6: Final answer
    x = 398,480.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.