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Finding the Fourth Proportional to 370,692.69, 511,539.67 and 217,746.56

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Solution

The fourth proportional to 370,692.69, 511,539.67 and 217,746.56 is: 300,480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,692.69 : 511,539.67 = 217,746.56 : x
  2. Step 2: Convert to fraction form
    370,692.69/511,539.67 = 217,746.56/x
  3. Step 3: Cross multiply
    370,692.69x = 511,539.67 × 217,746.56
  4. Step 4: Simplify right side
    370,692.69x = 111,386,004,997.07
  5. Step 5: Solve for x
    x = 111,386,004,997.07/370,692.69
  6. Step 6: Final answer
    x = 300,480.72

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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.