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Finding the Fourth Proportional to 368,150.40, 551,836.80 and 210,038.40

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Solution

The fourth proportional to 368,150.40, 551,836.80 and 210,038.40 is: 314,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,150.40 : 551,836.80 = 210,038.40 : x
  2. Step 2: Convert to fraction form
    368,150.40/551,836.80 = 210,038.40/x
  3. Step 3: Cross multiply
    368,150.40x = 551,836.80 × 210,038.40
  4. Step 4: Simplify right side
    368,150.40x = 115,906,918,533.12
  5. Step 5: Solve for x
    x = 115,906,918,533.12/368,150.40
  6. Step 6: Final answer
    x = 314,835.78

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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.