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Finding the Fourth Proportional to 370,907.80, 556,361.70 and 134,420.20

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Solution

The fourth proportional to 370,907.80, 556,361.70 and 134,420.20 is: 201,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,907.80 : 556,361.70 = 134,420.20 : x
  2. Step 2: Convert to fraction form
    370,907.80/556,361.70 = 134,420.20/x
  3. Step 3: Cross multiply
    370,907.80x = 556,361.70 × 134,420.20
  4. Step 4: Simplify right side
    370,907.80x = 74,786,250,986.34
  5. Step 5: Solve for x
    x = 74,786,250,986.34/370,907.80
  6. Step 6: Final answer
    x = 201,630.30

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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.