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Finding the Fourth Proportional to 480,555.12, 720,720.90 and 181,065.72

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Solution

The fourth proportional to 480,555.12, 720,720.90 and 181,065.72 is: 271,556.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,555.12 : 720,720.90 = 181,065.72 : x
  2. Step 2: Convert to fraction form
    480,555.12/720,720.90 = 181,065.72/x
  3. Step 3: Cross multiply
    480,555.12x = 720,720.90 × 181,065.72
  4. Step 4: Simplify right side
    480,555.12x = 130,497,848,677.55
  5. Step 5: Solve for x
    x = 130,497,848,677.55/480,555.12
  6. Step 6: Final answer
    x = 271,556.46

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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.