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Finding the Fourth Proportional to 421,033.02, 581,413.59 and 270,392.46

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Solution

The fourth proportional to 421,033.02, 581,413.59 and 270,392.46 is: 373,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,033.02 : 581,413.59 = 270,392.46 : x
  2. Step 2: Convert to fraction form
    421,033.02/581,413.59 = 270,392.46/x
  3. Step 3: Cross multiply
    421,033.02x = 581,413.59 × 270,392.46
  4. Step 4: Simplify right side
    421,033.02x = 157,209,850,877.53
  5. Step 5: Solve for x
    x = 157,209,850,877.53/421,033.02
  6. Step 6: Final answer
    x = 373,390.79

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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.