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Finding the Fourth Proportional to 329,259.87, 493,878.60 and 139,598.15

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Solution

The fourth proportional to 329,259.87, 493,878.60 and 139,598.15 is: 209,392.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,259.87 : 493,878.60 = 139,598.15 : x
  2. Step 2: Convert to fraction form
    329,259.87/493,878.60 = 139,598.15/x
  3. Step 3: Cross multiply
    329,259.87x = 493,878.60 × 139,598.15
  4. Step 4: Simplify right side
    329,259.87x = 68,944,536,415.20
  5. Step 5: Solve for x
    x = 68,944,536,415.20/329,259.87
  6. Step 6: Final answer
    x = 209,392.47

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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.