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Finding the Fourth Proportional to 342,290.61, 513,688.18 and 162,376.60

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Solution

The fourth proportional to 342,290.61, 513,688.18 and 162,376.60 is: 243,684.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,290.61 : 513,688.18 = 162,376.60 : x
  2. Step 2: Convert to fraction form
    342,290.61/513,688.18 = 162,376.60/x
  3. Step 3: Cross multiply
    342,290.61x = 513,688.18 × 162,376.60
  4. Step 4: Simplify right side
    342,290.61x = 83,410,940,128.59
  5. Step 5: Solve for x
    x = 83,410,940,128.59/342,290.61
  6. Step 6: Final answer
    x = 243,684.57

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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.