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Finding the Fourth Proportional to 388,907.70, 583,361.55 and 365,288.10

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Solution

The fourth proportional to 388,907.70, 583,361.55 and 365,288.10 is: 547,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,907.70 : 583,361.55 = 365,288.10 : x
  2. Step 2: Convert to fraction form
    388,907.70/583,361.55 = 365,288.10/x
  3. Step 3: Cross multiply
    388,907.70x = 583,361.55 × 365,288.10
  4. Step 4: Simplify right side
    388,907.70x = 213,095,032,212.56
  5. Step 5: Solve for x
    x = 213,095,032,212.56/388,907.70
  6. Step 6: Final answer
    x = 547,932.15

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Similar ratio
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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.