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Finding the Fourth Proportional to 370,341.90, 511,142.67 and 217,413.90

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Solution

The fourth proportional to 370,341.90, 511,142.67 and 217,413.90 is: 300,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,341.90 : 511,142.67 = 217,413.90 : x
  2. Step 2: Convert to fraction form
    370,341.90/511,142.67 = 217,413.90/x
  3. Step 3: Cross multiply
    370,341.90x = 511,142.67 × 217,413.90
  4. Step 4: Simplify right side
    370,341.90x = 111,129,521,341.11
  5. Step 5: Solve for x
    x = 111,129,521,341.11/370,341.90
  6. Step 6: Final answer
    x = 300,072.77

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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.