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Finding the Fourth Proportional to 173,639.20, 260,458.80 and 145,645.60

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Solution

The fourth proportional to 173,639.20, 260,458.80 and 145,645.60 is: 218,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,639.20 : 260,458.80 = 145,645.60 : x
  2. Step 2: Convert to fraction form
    173,639.20/260,458.80 = 145,645.60/x
  3. Step 3: Cross multiply
    173,639.20x = 260,458.80 × 145,645.60
  4. Step 4: Simplify right side
    173,639.20x = 37,934,678,201.28
  5. Step 5: Solve for x
    x = 37,934,678,201.28/173,639.20
  6. Step 6: Final answer
    x = 218,468.40

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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.