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Finding the Fourth Proportional to 260,495, 390,738.22 and 82,999.60

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Solution

The fourth proportional to 260,495, 390,738.22 and 82,999.60 is: 124,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,495 : 390,738.22 = 82,999.60 : x
  2. Step 2: Convert to fraction form
    260,495/390,738.22 = 82,999.60/x
  3. Step 3: Cross multiply
    260,495x = 390,738.22 × 82,999.60
  4. Step 4: Simplify right side
    260,495x = 32,431,115,964.71
  5. Step 5: Solve for x
    x = 32,431,115,964.71/260,495
  6. Step 6: Final answer
    x = 124,498.04

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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.