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Finding the Fourth Proportional to 281,872.29, 388,980.86 and 154,547.67

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Solution

The fourth proportional to 281,872.29, 388,980.86 and 154,547.67 is: 213,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,872.29 : 388,980.86 = 154,547.67 : x
  2. Step 2: Convert to fraction form
    281,872.29/388,980.86 = 154,547.67/x
  3. Step 3: Cross multiply
    281,872.29x = 388,980.86 × 154,547.67
  4. Step 4: Simplify right side
    281,872.29x = 60,116,084,814.86
  5. Step 5: Solve for x
    x = 60,116,084,814.86/281,872.29
  6. Step 6: Final answer
    x = 213,274.19

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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.