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Finding the Fourth Proportional to 145,314, 217,971 and 46,818

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Solution

The fourth proportional to 145,314, 217,971 and 46,818 is: 70,227

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,314 : 217,971 = 46,818 : x
  2. Step 2: Convert to fraction form
    145,314/217,971 = 46,818/x
  3. Step 3: Cross multiply
    145,314x = 217,971 × 46,818
  4. Step 4: Simplify right side
    145,314x = 10,204,966,278
  5. Step 5: Solve for x
    x = 10,204,966,278/145,314
  6. Step 6: Final answer
    x = 70,227

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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.