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Finding the Fourth Proportional to 403,917.60, 607,188.60 and 346,180.80

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Solution

The fourth proportional to 403,917.60, 607,188.60 and 346,180.80 is: 520,395.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,917.60 : 607,188.60 = 346,180.80 : x
  2. Step 2: Convert to fraction form
    403,917.60/607,188.60 = 346,180.80/x
  3. Step 3: Cross multiply
    403,917.60x = 607,188.60 × 346,180.80
  4. Step 4: Simplify right side
    403,917.60x = 210,197,035,298.88
  5. Step 5: Solve for x
    x = 210,197,035,298.88/403,917.60
  6. Step 6: Final answer
    x = 520,395.83

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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.