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Finding the Fourth Proportional to 265,004.40, 397,516.20 and 78,034.80

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Solution

The fourth proportional to 265,004.40, 397,516.20 and 78,034.80 is: 117,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,004.40 : 397,516.20 = 78,034.80 : x
  2. Step 2: Convert to fraction form
    265,004.40/397,516.20 = 78,034.80/x
  3. Step 3: Cross multiply
    265,004.40x = 397,516.20 × 78,034.80
  4. Step 4: Simplify right side
    265,004.40x = 31,020,097,163.76
  5. Step 5: Solve for x
    x = 31,020,097,163.76/265,004.40
  6. Step 6: Final answer
    x = 117,055.03

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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.