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Finding the Fourth Proportional to 522,157.47, 720,523.17 and 307,284.72

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Solution

The fourth proportional to 522,157.47, 720,523.17 and 307,284.72 is: 424,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,157.47 : 720,523.17 = 307,284.72 : x
  2. Step 2: Convert to fraction form
    522,157.47/720,523.17 = 307,284.72/x
  3. Step 3: Cross multiply
    522,157.47x = 720,523.17 × 307,284.72
  4. Step 4: Simplify right side
    522,157.47x = 221,405,760,546.96
  5. Step 5: Solve for x
    x = 221,405,760,546.96/522,157.47
  6. Step 6: Final answer
    x = 424,021.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.