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Finding the Fourth Proportional to 280,998.60, 421,300.80 and 103,482.60

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Solution

The fourth proportional to 280,998.60, 421,300.80 and 103,482.60 is: 155,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,998.60 : 421,300.80 = 103,482.60 : x
  2. Step 2: Convert to fraction form
    280,998.60/421,300.80 = 103,482.60/x
  3. Step 3: Cross multiply
    280,998.60x = 421,300.80 × 103,482.60
  4. Step 4: Simplify right side
    280,998.60x = 43,597,302,166.08
  5. Step 5: Solve for x
    x = 43,597,302,166.08/280,998.60
  6. Step 6: Final answer
    x = 155,151.31

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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.