Home / 306,032.20-459,048.30-212,720.20

Finding the Fourth Proportional to 306,032.20, 459,048.30 and 212,720.20

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Solution

The fourth proportional to 306,032.20, 459,048.30 and 212,720.20 is: 319,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,032.20 : 459,048.30 = 212,720.20 : x
  2. Step 2: Convert to fraction form
    306,032.20/459,048.30 = 212,720.20/x
  3. Step 3: Cross multiply
    306,032.20x = 459,048.30 × 212,720.20
  4. Step 4: Simplify right side
    306,032.20x = 97,648,846,185.66
  5. Step 5: Solve for x
    x = 97,648,846,185.66/306,032.20
  6. Step 6: Final answer
    x = 319,080.30

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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.