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Finding the Fourth Proportional to 342,361.67, 513,442.13 and 128,975.63

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Solution

The fourth proportional to 342,361.67, 513,442.13 and 128,975.63 is: 193,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,361.67 : 513,442.13 = 128,975.63 : x
  2. Step 2: Convert to fraction form
    342,361.67/513,442.13 = 128,975.63/x
  3. Step 3: Cross multiply
    342,361.67x = 513,442.13 × 128,975.63
  4. Step 4: Simplify right side
    342,361.67x = 66,221,518,973.20
  5. Step 5: Solve for x
    x = 66,221,518,973.20/342,361.67
  6. Step 6: Final answer
    x = 193,425.62

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1.5x scale

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.