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Finding the Fourth Proportional to 467,436.40, 645,194.40 and 276,516.16

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Solution

The fourth proportional to 467,436.40, 645,194.40 and 276,516.16 is: 381,670.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,436.40 : 645,194.40 = 276,516.16 : x
  2. Step 2: Convert to fraction form
    467,436.40/645,194.40 = 276,516.16/x
  3. Step 3: Cross multiply
    467,436.40x = 645,194.40 × 276,516.16
  4. Step 4: Simplify right side
    467,436.40x = 178,406,677,941.50
  5. Step 5: Solve for x
    x = 178,406,677,941.50/467,436.40
  6. Step 6: Final answer
    x = 381,670.49

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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.