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Finding the Fourth Proportional to 213,039.40, 319,559.10 and 63,302.80

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Solution

The fourth proportional to 213,039.40, 319,559.10 and 63,302.80 is: 94,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,039.40 : 319,559.10 = 63,302.80 : x
  2. Step 2: Convert to fraction form
    213,039.40/319,559.10 = 63,302.80/x
  3. Step 3: Cross multiply
    213,039.40x = 319,559.10 × 63,302.80
  4. Step 4: Simplify right side
    213,039.40x = 20,228,985,795.48
  5. Step 5: Solve for x
    x = 20,228,985,795.48/213,039.40
  6. Step 6: Final answer
    x = 94,954.20

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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.