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Finding the Fourth Proportional to 213,063.21, 319,737.38 and 88,404.21

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Solution

The fourth proportional to 213,063.21, 319,737.38 and 88,404.21 is: 132,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,063.21 : 319,737.38 = 88,404.21 : x
  2. Step 2: Convert to fraction form
    213,063.21/319,737.38 = 88,404.21/x
  3. Step 3: Cross multiply
    213,063.21x = 319,737.38 × 88,404.21
  4. Step 4: Simplify right side
    213,063.21x = 28,266,130,044.35
  5. Step 5: Solve for x
    x = 28,266,130,044.35/213,063.21
  6. Step 6: Final answer
    x = 132,665.47

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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.