Home / 280,633.95-421,116.93-103,265.46

Finding the Fourth Proportional to 280,633.95, 421,116.93 and 103,265.46

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Solution

The fourth proportional to 280,633.95, 421,116.93 and 103,265.46 is: 154,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,633.95 : 421,116.93 = 103,265.46 : x
  2. Step 2: Convert to fraction form
    280,633.95/421,116.93 = 103,265.46/x
  3. Step 3: Cross multiply
    280,633.95x = 421,116.93 × 103,265.46
  4. Step 4: Simplify right side
    280,633.95x = 43,486,833,490.24
  5. Step 5: Solve for x
    x = 43,486,833,490.24/280,633.95
  6. Step 6: Final answer
    x = 154,959.28

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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.