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Finding the Fourth Proportional to 461,168.10, 636,315.21 and 279,975.42

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Solution

The fourth proportional to 461,168.10, 636,315.21 and 279,975.42 is: 386,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,168.10 : 636,315.21 = 279,975.42 : x
  2. Step 2: Convert to fraction form
    461,168.10/636,315.21 = 279,975.42/x
  3. Step 3: Cross multiply
    461,168.10x = 636,315.21 × 279,975.42
  4. Step 4: Simplify right side
    461,168.10x = 178,152,618,172.14
  5. Step 5: Solve for x
    x = 178,152,618,172.14/461,168.10
  6. Step 6: Final answer
    x = 386,307.33

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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.