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Finding the Fourth Proportional to 368,050.80, 551,395.80 and 209,809.20

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Solution

The fourth proportional to 368,050.80, 551,395.80 and 209,809.20 is: 314,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,050.80 : 551,395.80 = 209,809.20 : x
  2. Step 2: Convert to fraction form
    368,050.80/551,395.80 = 209,809.20/x
  3. Step 3: Cross multiply
    368,050.80x = 551,395.80 × 209,809.20
  4. Step 4: Simplify right side
    368,050.80x = 115,687,911,681.36
  5. Step 5: Solve for x
    x = 115,687,911,681.36/368,050.80
  6. Step 6: Final answer
    x = 314,325.93

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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.