Home / 638,964.08-958,086.48-212,271.50

Finding the Fourth Proportional to 638,964.08, 958,086.48 and 212,271.50

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Solution

The fourth proportional to 638,964.08, 958,086.48 and 212,271.50 is: 318,287.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,964.08 : 958,086.48 = 212,271.50 : x
  2. Step 2: Convert to fraction form
    638,964.08/958,086.48 = 212,271.50/x
  3. Step 3: Cross multiply
    638,964.08x = 958,086.48 × 212,271.50
  4. Step 4: Simplify right side
    638,964.08x = 203,374,454,239.32
  5. Step 5: Solve for x
    x = 203,374,454,239.32/638,964.08
  6. Step 6: Final answer
    x = 318,287.77

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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.