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Finding the Fourth Proportional to 522,158.47, 720,524.55 and 307,285.72

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Solution

The fourth proportional to 522,158.47, 720,524.55 and 307,285.72 is: 424,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,158.47 : 720,524.55 = 307,285.72 : x
  2. Step 2: Convert to fraction form
    522,158.47/720,524.55 = 307,285.72/x
  3. Step 3: Cross multiply
    522,158.47x = 720,524.55 × 307,285.72
  4. Step 4: Simplify right side
    522,158.47x = 221,406,905,124.43
  5. Step 5: Solve for x
    x = 221,406,905,124.43/522,158.47
  6. Step 6: Final answer
    x = 424,022.43

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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.