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Finding the Fourth Proportional to 289,051.20, 432,993.60 and 289,051.20

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Solution

The fourth proportional to 289,051.20, 432,993.60 and 289,051.20 is: 432,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,051.20 : 432,993.60 = 289,051.20 : x
  2. Step 2: Convert to fraction form
    289,051.20/432,993.60 = 289,051.20/x
  3. Step 3: Cross multiply
    289,051.20x = 432,993.60 × 289,051.20
  4. Step 4: Simplify right side
    289,051.20x = 125,157,319,672.32
  5. Step 5: Solve for x
    x = 125,157,319,672.32/289,051.20
  6. Step 6: Final answer
    x = 432,993.60

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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.