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Finding the Fourth Proportional to 369,478.53, 509,886.05 and 216,480.11

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Solution

The fourth proportional to 369,478.53, 509,886.05 and 216,480.11 is: 298,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,478.53 : 509,886.05 = 216,480.11 : x
  2. Step 2: Convert to fraction form
    369,478.53/509,886.05 = 216,480.11/x
  3. Step 3: Cross multiply
    369,478.53x = 509,886.05 × 216,480.11
  4. Step 4: Simplify right side
    369,478.53x = 110,380,184,559.64
  5. Step 5: Solve for x
    x = 110,380,184,559.64/369,478.53
  6. Step 6: Final answer
    x = 298,745.87

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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.