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Finding the Fourth Proportional to 550,130.42, 759,179.48 and 308,413.05

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Solution

The fourth proportional to 550,130.42, 759,179.48 and 308,413.05 is: 425,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,130.42 : 759,179.48 = 308,413.05 : x
  2. Step 2: Convert to fraction form
    550,130.42/759,179.48 = 308,413.05/x
  3. Step 3: Cross multiply
    550,130.42x = 759,179.48 × 308,413.05
  4. Step 4: Simplify right side
    550,130.42x = 234,140,854,856.34
  5. Step 5: Solve for x
    x = 234,140,854,856.34/550,130.42
  6. Step 6: Final answer
    x = 425,609.72

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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.