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Finding the Fourth Proportional to 424,647.60, 636,971.40 and 171,927.60

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Solution

The fourth proportional to 424,647.60, 636,971.40 and 171,927.60 is: 257,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,647.60 : 636,971.40 = 171,927.60 : x
  2. Step 2: Convert to fraction form
    424,647.60/636,971.40 = 171,927.60/x
  3. Step 3: Cross multiply
    424,647.60x = 636,971.40 × 171,927.60
  4. Step 4: Simplify right side
    424,647.60x = 109,512,964,070.64
  5. Step 5: Solve for x
    x = 109,512,964,070.64/424,647.60
  6. Step 6: Final answer
    x = 257,891.40

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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.