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Finding the Fourth Proportional to 348,370.70, 521,535.45 and 260,015.90

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Solution

The fourth proportional to 348,370.70, 521,535.45 and 260,015.90 is: 389,262.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,370.70 : 521,535.45 = 260,015.90 : x
  2. Step 2: Convert to fraction form
    348,370.70/521,535.45 = 260,015.90/x
  3. Step 3: Cross multiply
    348,370.70x = 521,535.45 × 260,015.90
  4. Step 4: Simplify right side
    348,370.70x = 135,607,509,413.66
  5. Step 5: Solve for x
    x = 135,607,509,413.66/348,370.70
  6. Step 6: Final answer
    x = 389,262.10

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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.