Home / 280,938.28-421,210.55-103,422.26

Finding the Fourth Proportional to 280,938.28, 421,210.55 and 103,422.26

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Solution

The fourth proportional to 280,938.28, 421,210.55 and 103,422.26 is: 155,060.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,938.28 : 421,210.55 = 103,422.26 : x
  2. Step 2: Convert to fraction form
    280,938.28/421,210.55 = 103,422.26/x
  3. Step 3: Cross multiply
    280,938.28x = 421,210.55 × 103,422.26
  4. Step 4: Simplify right side
    280,938.28x = 43,562,545,169.35
  5. Step 5: Solve for x
    x = 43,562,545,169.35/280,938.28
  6. Step 6: Final answer
    x = 155,060.91

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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.