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Finding the Fourth Proportional to 472,178.27, 651,606.12 and 257,318.39

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Solution

The fourth proportional to 472,178.27, 651,606.12 and 257,318.39 is: 355,099.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,178.27 : 651,606.12 = 257,318.39 : x
  2. Step 2: Convert to fraction form
    472,178.27/651,606.12 = 257,318.39/x
  3. Step 3: Cross multiply
    472,178.27x = 651,606.12 × 257,318.39
  4. Step 4: Simplify right side
    472,178.27x = 167,670,237,712.55
  5. Step 5: Solve for x
    x = 167,670,237,712.55/472,178.27
  6. Step 6: Final answer
    x = 355,099.44

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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.