Home / 281,154.24-421,709.76-103,628.16

Finding the Fourth Proportional to 281,154.24, 421,709.76 and 103,628.16

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Solution

The fourth proportional to 281,154.24, 421,709.76 and 103,628.16 is: 155,434.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,154.24 : 421,709.76 = 103,628.16 : x
  2. Step 2: Convert to fraction form
    281,154.24/421,709.76 = 103,628.16/x
  3. Step 3: Cross multiply
    281,154.24x = 421,709.76 × 103,628.16
  4. Step 4: Simplify right side
    281,154.24x = 43,701,006,482.84
  5. Step 5: Solve for x
    x = 43,701,006,482.84/281,154.24
  6. Step 6: Final answer
    x = 155,434.28

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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.