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Finding the Fourth Proportional to 213,575.40, 319,925.70 and 108,453.60

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Solution

The fourth proportional to 213,575.40, 319,925.70 and 108,453.60 is: 162,458.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,575.40 : 319,925.70 = 108,453.60 : x
  2. Step 2: Convert to fraction form
    213,575.40/319,925.70 = 108,453.60/x
  3. Step 3: Cross multiply
    213,575.40x = 319,925.70 × 108,453.60
  4. Step 4: Simplify right side
    213,575.40x = 34,697,093,897.52
  5. Step 5: Solve for x
    x = 34,697,093,897.52/213,575.40
  6. Step 6: Final answer
    x = 162,458.29

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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.