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Finding the Fourth Proportional to 374,106.40, 561,159.60 and 307,621.60

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Solution

The fourth proportional to 374,106.40, 561,159.60 and 307,621.60 is: 461,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,106.40 : 561,159.60 = 307,621.60 : x
  2. Step 2: Convert to fraction form
    374,106.40/561,159.60 = 307,621.60/x
  3. Step 3: Cross multiply
    374,106.40x = 561,159.60 × 307,621.60
  4. Step 4: Simplify right side
    374,106.40x = 172,624,814,007.36
  5. Step 5: Solve for x
    x = 172,624,814,007.36/374,106.40
  6. Step 6: Final answer
    x = 461,432.40

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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.