Home / 213,810,406.60-321,387,456.30-209,779,328.20

Finding the Fourth Proportional to 213,810,406.60, 321,387,456.30 and 209,779,328.20

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Solution

The fourth proportional to 213,810,406.60, 321,387,456.30 and 209,779,328.20 is: 315,328,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,810,406.60 : 321,387,456.30 = 209,779,328.20 : x
  2. Step 2: Convert to fraction form
    213,810,406.60/321,387,456.30 = 209,779,328.20/x
  3. Step 3: Cross multiply
    213,810,406.60x = 321,387,456.30 × 209,779,328.20
  4. Step 4: Simplify right side
    213,810,406.60x = 67,420,444,674,520,856
  5. Step 5: Solve for x
    x = 67,420,444,674,520,856/213,810,406.60
  6. Step 6: Final answer
    x = 315,328,172.03

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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.