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Finding the Fourth Proportional to 325,430.64, 448,778.76 and 253,784.52

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Solution

The fourth proportional to 325,430.64, 448,778.76 and 253,784.52 is: 349,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,430.64 : 448,778.76 = 253,784.52 : x
  2. Step 2: Convert to fraction form
    325,430.64/448,778.76 = 253,784.52/x
  3. Step 3: Cross multiply
    325,430.64x = 448,778.76 × 253,784.52
  4. Step 4: Simplify right side
    325,430.64x = 113,893,102,192.80
  5. Step 5: Solve for x
    x = 113,893,102,192.80/325,430.64
  6. Step 6: Final answer
    x = 349,976.58

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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.