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Finding the Fourth Proportional to 380,030.46, 570,041.37 and 155,511.42

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Solution

The fourth proportional to 380,030.46, 570,041.37 and 155,511.42 is: 233,265.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,030.46 : 570,041.37 = 155,511.42 : x
  2. Step 2: Convert to fraction form
    380,030.46/570,041.37 = 155,511.42/x
  3. Step 3: Cross multiply
    380,030.46x = 570,041.37 × 155,511.42
  4. Step 4: Simplify right side
    380,030.46x = 88,647,942,907.45
  5. Step 5: Solve for x
    x = 88,647,942,907.45/380,030.46
  6. Step 6: Final answer
    x = 233,265.36

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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.