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Finding the Fourth Proportional to 426,085.22, 639,127.08 and 248,467.68

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Solution

The fourth proportional to 426,085.22, 639,127.08 and 248,467.68 is: 372,701.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,085.22 : 639,127.08 = 248,467.68 : x
  2. Step 2: Convert to fraction form
    426,085.22/639,127.08 = 248,467.68/x
  3. Step 3: Cross multiply
    426,085.22x = 639,127.08 × 248,467.68
  4. Step 4: Simplify right side
    426,085.22x = 158,802,422,792.77
  5. Step 5: Solve for x
    x = 158,802,422,792.77/426,085.22
  6. Step 6: Final answer
    x = 372,701.08

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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.