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Finding the Fourth Proportional to 307,745.60, 461,272.80 and 130,222.40

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Solution

The fourth proportional to 307,745.60, 461,272.80 and 130,222.40 is: 195,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,745.60 : 461,272.80 = 130,222.40 : x
  2. Step 2: Convert to fraction form
    307,745.60/461,272.80 = 130,222.40/x
  3. Step 3: Cross multiply
    307,745.60x = 461,272.80 × 130,222.40
  4. Step 4: Simplify right side
    307,745.60x = 60,068,051,070.72
  5. Step 5: Solve for x
    x = 60,068,051,070.72/307,745.60
  6. Step 6: Final answer
    x = 195,187.36

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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.