Home / 287,011,519.58-395,864,416.13-216,450,099.98

Finding the Fourth Proportional to 287,011,519.58, 395,864,416.13 and 216,450,099.98

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Solution

The fourth proportional to 287,011,519.58, 395,864,416.13 and 216,450,099.98 is: 298,541,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,011,519.58 : 395,864,416.13 = 216,450,099.98 : x
  2. Step 2: Convert to fraction form
    287,011,519.58/395,864,416.13 = 216,450,099.98/x
  3. Step 3: Cross multiply
    287,011,519.58x = 395,864,416.13 × 216,450,099.98
  4. Step 4: Simplify right side
    287,011,519.58x = 85,684,892,446,801,248
  5. Step 5: Solve for x
    x = 85,684,892,446,801,248/287,011,519.58
  6. Step 6: Final answer
    x = 298,541,649.39

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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.