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Finding the Fourth Proportional to 280,627.96, 421,108.01 and 103,259.52

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Solution

The fourth proportional to 280,627.96, 421,108.01 and 103,259.52 is: 154,950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,627.96 : 421,108.01 = 103,259.52 : x
  2. Step 2: Convert to fraction form
    280,627.96/421,108.01 = 103,259.52/x
  3. Step 3: Cross multiply
    280,627.96x = 421,108.01 × 103,259.52
  4. Step 4: Simplify right side
    280,627.96x = 43,483,410,980.76
  5. Step 5: Solve for x
    x = 43,483,410,980.76/280,627.96
  6. Step 6: Final answer
    x = 154,950.39

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1.5x scale

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.