Home / 639,513.83-959,045.56-212,933.81

Finding the Fourth Proportional to 639,513.83, 959,045.56 and 212,933.81

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Solution

The fourth proportional to 639,513.83, 959,045.56 and 212,933.81 is: 319,325.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,513.83 : 959,045.56 = 212,933.81 : x
  2. Step 2: Convert to fraction form
    639,513.83/959,045.56 = 212,933.81/x
  3. Step 3: Cross multiply
    639,513.83x = 959,045.56 × 212,933.81
  4. Step 4: Simplify right side
    639,513.83x = 204,213,225,054.38
  5. Step 5: Solve for x
    x = 204,213,225,054.38/639,513.83
  6. Step 6: Final answer
    x = 319,325.74

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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.