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Finding the Fourth Proportional to 368,014.40, 551,632.80 and 209,902.40

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Solution

The fourth proportional to 368,014.40, 551,632.80 and 209,902.40 is: 314,631.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,014.40 : 551,632.80 = 209,902.40 : x
  2. Step 2: Convert to fraction form
    368,014.40/551,632.80 = 209,902.40/x
  3. Step 3: Cross multiply
    368,014.40x = 551,632.80 × 209,902.40
  4. Step 4: Simplify right side
    368,014.40x = 115,789,048,638.72
  5. Step 5: Solve for x
    x = 115,789,048,638.72/368,014.40
  6. Step 6: Final answer
    x = 314,631.84

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1.5x scale

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.