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Finding the Fourth Proportional to 424,485.50, 636,728.24 and 108,942.40

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Solution

The fourth proportional to 424,485.50, 636,728.24 and 108,942.40 is: 163,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,485.50 : 636,728.24 = 108,942.40 : x
  2. Step 2: Convert to fraction form
    424,485.50/636,728.24 = 108,942.40/x
  3. Step 3: Cross multiply
    424,485.50x = 636,728.24 × 108,942.40
  4. Step 4: Simplify right side
    424,485.50x = 69,366,703,681.64
  5. Step 5: Solve for x
    x = 69,366,703,681.64/424,485.50
  6. Step 6: Final answer
    x = 163,413.60

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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.