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Finding the Fourth Proportional to 260,509.54, 390,709.63 and 73,477.30

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Solution

The fourth proportional to 260,509.54, 390,709.63 and 73,477.30 is: 110,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,509.54 : 390,709.63 = 73,477.30 : x
  2. Step 2: Convert to fraction form
    260,509.54/390,709.63 = 73,477.30/x
  3. Step 3: Cross multiply
    260,509.54x = 390,709.63 × 73,477.30
  4. Step 4: Simplify right side
    260,509.54x = 28,708,288,696.40
  5. Step 5: Solve for x
    x = 28,708,288,696.40/260,509.54
  6. Step 6: Final answer
    x = 110,200.53

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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.