Home / 638,933.16-958,298.08-212,433.52

Finding the Fourth Proportional to 638,933.16, 958,298.08 and 212,433.52

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Solution

The fourth proportional to 638,933.16, 958,298.08 and 212,433.52 is: 318,616.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,933.16 : 958,298.08 = 212,433.52 : x
  2. Step 2: Convert to fraction form
    638,933.16/958,298.08 = 212,433.52/x
  3. Step 3: Cross multiply
    638,933.16x = 958,298.08 × 212,433.52
  4. Step 4: Simplify right side
    638,933.16x = 203,574,634,343.64
  5. Step 5: Solve for x
    x = 203,574,634,343.64/638,933.16
  6. Step 6: Final answer
    x = 318,616.48

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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.