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Finding the Fourth Proportional to 448,085.60, 672,128.40 and 336,111.20

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Solution

The fourth proportional to 448,085.60, 672,128.40 and 336,111.20 is: 504,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,085.60 : 672,128.40 = 336,111.20 : x
  2. Step 2: Convert to fraction form
    448,085.60/672,128.40 = 336,111.20/x
  3. Step 3: Cross multiply
    448,085.60x = 672,128.40 × 336,111.20
  4. Step 4: Simplify right side
    448,085.60x = 225,909,883,078.08
  5. Step 5: Solve for x
    x = 225,909,883,078.08/448,085.60
  6. Step 6: Final answer
    x = 504,166.80

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Similar ratio
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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.