Home / 210,338,800.49-315,514,628.36-72,162,469.34

Finding the Fourth Proportional to 210,338,800.49, 315,514,628.36 and 72,162,469.34

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Solution

The fourth proportional to 210,338,800.49, 315,514,628.36 and 72,162,469.34 is: 108,245,909.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,338,800.49 : 315,514,628.36 = 72,162,469.34 : x
  2. Step 2: Convert to fraction form
    210,338,800.49/315,514,628.36 = 72,162,469.34/x
  3. Step 3: Cross multiply
    210,338,800.49x = 315,514,628.36 × 72,162,469.34
  4. Step 4: Simplify right side
    210,338,800.49x = 22,768,314,695,349,996
  5. Step 5: Solve for x
    x = 22,768,314,695,349,996/210,338,800.49
  6. Step 6: Final answer
    x = 108,245,909.18

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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.