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Finding the Fourth Proportional to 262,025.60, 392,698.20 and 121,485.20

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Solution

The fourth proportional to 262,025.60, 392,698.20 and 121,485.20 is: 182,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,025.60 : 392,698.20 = 121,485.20 : x
  2. Step 2: Convert to fraction form
    262,025.60/392,698.20 = 121,485.20/x
  3. Step 3: Cross multiply
    262,025.60x = 392,698.20 × 121,485.20
  4. Step 4: Simplify right side
    262,025.60x = 47,707,019,366.64
  5. Step 5: Solve for x
    x = 47,707,019,366.64/262,025.60
  6. Step 6: Final answer
    x = 182,070.07

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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.