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Finding the Fourth Proportional to 289,803.60, 434,705.40 and 240,037.20

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Solution

The fourth proportional to 289,803.60, 434,705.40 and 240,037.20 is: 360,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,803.60 : 434,705.40 = 240,037.20 : x
  2. Step 2: Convert to fraction form
    289,803.60/434,705.40 = 240,037.20/x
  3. Step 3: Cross multiply
    289,803.60x = 434,705.40 × 240,037.20
  4. Step 4: Simplify right side
    289,803.60x = 104,345,467,040.88
  5. Step 5: Solve for x
    x = 104,345,467,040.88/289,803.60
  6. Step 6: Final answer
    x = 360,055.80

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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.