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Finding the Fourth Proportional to 298,671,879.12, 411,852,915.40 and 235,843,743.44

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Solution

The fourth proportional to 298,671,879.12, 411,852,915.40 and 235,843,743.44 is: 325,216,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,671,879.12 : 411,852,915.40 = 235,843,743.44 : x
  2. Step 2: Convert to fraction form
    298,671,879.12/411,852,915.40 = 235,843,743.44/x
  3. Step 3: Cross multiply
    298,671,879.12x = 411,852,915.40 × 235,843,743.44
  4. Step 4: Simplify right side
    298,671,879.12x = 97,132,933,314,613,616
  5. Step 5: Solve for x
    x = 97,132,933,314,613,616/298,671,879.12
  6. Step 6: Final answer
    x = 325,216,199.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.