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Finding the Fourth Proportional to 260,070.75, 390,106.13 and 73,082.25

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Solution

The fourth proportional to 260,070.75, 390,106.13 and 73,082.25 is: 109,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,070.75 : 390,106.13 = 73,082.25 : x
  2. Step 2: Convert to fraction form
    260,070.75/390,106.13 = 73,082.25/x
  3. Step 3: Cross multiply
    260,070.75x = 390,106.13 × 73,082.25
  4. Step 4: Simplify right side
    260,070.75x = 28,509,833,353.78
  5. Step 5: Solve for x
    x = 28,509,833,353.78/260,070.75
  6. Step 6: Final answer
    x = 109,623.38

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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.