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Finding the Fourth Proportional to 548,897.40, 822,957.30 and 211,807.80

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Solution

The fourth proportional to 548,897.40, 822,957.30 and 211,807.80 is: 317,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,897.40 : 822,957.30 = 211,807.80 : x
  2. Step 2: Convert to fraction form
    548,897.40/822,957.30 = 211,807.80/x
  3. Step 3: Cross multiply
    548,897.40x = 822,957.30 × 211,807.80
  4. Step 4: Simplify right side
    548,897.40x = 174,308,775,206.94
  5. Step 5: Solve for x
    x = 174,308,775,206.94/548,897.40
  6. Step 6: Final answer
    x = 317,561.67

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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.