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Finding the Fourth Proportional to 401,061.42, 553,440.74 and 219,737.25

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Solution

The fourth proportional to 401,061.42, 553,440.74 and 219,737.25 is: 303,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,061.42 : 553,440.74 = 219,737.25 : x
  2. Step 2: Convert to fraction form
    401,061.42/553,440.74 = 219,737.25/x
  3. Step 3: Cross multiply
    401,061.42x = 553,440.74 × 219,737.25
  4. Step 4: Simplify right side
    401,061.42x = 121,611,545,146.88
  5. Step 5: Solve for x
    x = 121,611,545,146.88/401,061.42
  6. Step 6: Final answer
    x = 303,224.24

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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.