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Finding the Fourth Proportional to 318,349.73, 477,413.80 and 118,561.10

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Solution

The fourth proportional to 318,349.73, 477,413.80 and 118,561.10 is: 177,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,349.73 : 477,413.80 = 118,561.10 : x
  2. Step 2: Convert to fraction form
    318,349.73/477,413.80 = 118,561.10/x
  3. Step 3: Cross multiply
    318,349.73x = 477,413.80 × 118,561.10
  4. Step 4: Simplify right side
    318,349.73x = 56,602,705,283.18
  5. Step 5: Solve for x
    x = 56,602,705,283.18/318,349.73
  6. Step 6: Final answer
    x = 177,800.39

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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.