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Finding the Fourth Proportional to 374,438.40, 561,657.60 and 307,953.60

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Solution

The fourth proportional to 374,438.40, 561,657.60 and 307,953.60 is: 461,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,438.40 : 561,657.60 = 307,953.60 : x
  2. Step 2: Convert to fraction form
    374,438.40/561,657.60 = 307,953.60/x
  3. Step 3: Cross multiply
    374,438.40x = 561,657.60 × 307,953.60
  4. Step 4: Simplify right side
    374,438.40x = 172,964,479,887.36
  5. Step 5: Solve for x
    x = 172,964,479,887.36/374,438.40
  6. Step 6: Final answer
    x = 461,930.40

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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.