Home / 213,506,474.20-319,621,982.10-127,200,455.80

Finding the Fourth Proportional to 213,506,474.20, 319,621,982.10 and 127,200,455.80

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Solution

The fourth proportional to 213,506,474.20, 319,621,982.10 and 127,200,455.80 is: 190,420,744.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,506,474.20 : 319,621,982.10 = 127,200,455.80 : x
  2. Step 2: Convert to fraction form
    213,506,474.20/319,621,982.10 = 127,200,455.80/x
  3. Step 3: Cross multiply
    213,506,474.20x = 319,621,982.10 × 127,200,455.80
  4. Step 4: Simplify right side
    213,506,474.20x = 40,656,061,806,819,440
  5. Step 5: Solve for x
    x = 40,656,061,806,819,440/213,506,474.20
  6. Step 6: Final answer
    x = 190,420,744.66

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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.