Home / 280,580.20-421,054.44-103,088.68

Finding the Fourth Proportional to 280,580.20, 421,054.44 and 103,088.68

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Solution

The fourth proportional to 280,580.20, 421,054.44 and 103,088.68 is: 154,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,580.20 : 421,054.44 = 103,088.68 : x
  2. Step 2: Convert to fraction form
    280,580.20/421,054.44 = 103,088.68/x
  3. Step 3: Cross multiply
    280,580.20x = 421,054.44 × 103,088.68
  4. Step 4: Simplify right side
    280,580.20x = 43,405,946,427.74
  5. Step 5: Solve for x
    x = 43,405,946,427.74/280,580.20
  6. Step 6: Final answer
    x = 154,700.68

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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.