Home / 213,038.85-319,315.44-133,113.72

Finding the Fourth Proportional to 213,038.85, 319,315.44 and 133,113.72

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Solution

The fourth proportional to 213,038.85, 319,315.44 and 133,113.72 is: 199,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,038.85 : 319,315.44 = 133,113.72 : x
  2. Step 2: Convert to fraction form
    213,038.85/319,315.44 = 133,113.72/x
  3. Step 3: Cross multiply
    213,038.85x = 319,315.44 × 133,113.72
  4. Step 4: Simplify right side
    213,038.85x = 42,505,266,071.84
  5. Step 5: Solve for x
    x = 42,505,266,071.84/213,038.85
  6. Step 6: Final answer
    x = 199,518.85

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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.