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Finding the Fourth Proportional to 260,510.54, 390,711.13 and 73,478.30

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Solution

The fourth proportional to 260,510.54, 390,711.13 and 73,478.30 is: 110,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,510.54 : 390,711.13 = 73,478.30 : x
  2. Step 2: Convert to fraction form
    260,510.54/390,711.13 = 73,478.30/x
  3. Step 3: Cross multiply
    260,510.54x = 390,711.13 × 73,478.30
  4. Step 4: Simplify right side
    260,510.54x = 28,708,789,623.48
  5. Step 5: Solve for x
    x = 28,708,789,623.48/260,510.54
  6. Step 6: Final answer
    x = 110,202.03

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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.