Home / 306,075.10-459,112.65-221,438.20

Finding the Fourth Proportional to 306,075.10, 459,112.65 and 221,438.20

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Solution

The fourth proportional to 306,075.10, 459,112.65 and 221,438.20 is: 332,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,075.10 : 459,112.65 = 221,438.20 : x
  2. Step 2: Convert to fraction form
    306,075.10/459,112.65 = 221,438.20/x
  3. Step 3: Cross multiply
    306,075.10x = 459,112.65 × 221,438.20
  4. Step 4: Simplify right side
    306,075.10x = 101,665,078,813.23
  5. Step 5: Solve for x
    x = 101,665,078,813.23/306,075.10
  6. Step 6: Final answer
    x = 332,157.30

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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.