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Finding the Fourth Proportional to 388,777.28, 583,411.68 and 222,889.28

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Solution

The fourth proportional to 388,777.28, 583,411.68 and 222,889.28 is: 334,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,777.28 : 583,411.68 = 222,889.28 : x
  2. Step 2: Convert to fraction form
    388,777.28/583,411.68 = 222,889.28/x
  3. Step 3: Cross multiply
    388,777.28x = 583,411.68 × 222,889.28
  4. Step 4: Simplify right side
    388,777.28x = 130,036,209,298.79
  5. Step 5: Solve for x
    x = 130,036,209,298.79/388,777.28
  6. Step 6: Final answer
    x = 334,474.82

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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.