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Finding the Fourth Proportional to 368,529.72, 551,908.72 and 210,278.40

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Solution

The fourth proportional to 368,529.72, 551,908.72 and 210,278.40 is: 314,912.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,529.72 : 551,908.72 = 210,278.40 : x
  2. Step 2: Convert to fraction form
    368,529.72/551,908.72 = 210,278.40/x
  3. Step 3: Cross multiply
    368,529.72x = 551,908.72 × 210,278.40
  4. Step 4: Simplify right side
    368,529.72x = 116,054,482,587.65
  5. Step 5: Solve for x
    x = 116,054,482,587.65/368,529.72
  6. Step 6: Final answer
    x = 314,912.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.