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Finding the Fourth Proportional to 222,421.80, 333,632.70 and 127,943.40

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Solution

The fourth proportional to 222,421.80, 333,632.70 and 127,943.40 is: 191,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,421.80 : 333,632.70 = 127,943.40 : x
  2. Step 2: Convert to fraction form
    222,421.80/333,632.70 = 127,943.40/x
  3. Step 3: Cross multiply
    222,421.80x = 333,632.70 × 127,943.40
  4. Step 4: Simplify right side
    222,421.80x = 42,686,101,989.18
  5. Step 5: Solve for x
    x = 42,686,101,989.18/222,421.80
  6. Step 6: Final answer
    x = 191,915.10

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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.