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Finding the Fourth Proportional to 219,551,787.21, 302,978,607.63 and 125,464,863.63

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Solution

The fourth proportional to 219,551,787.21, 302,978,607.63 and 125,464,863.63 is: 173,139,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,551,787.21 : 302,978,607.63 = 125,464,863.63 : x
  2. Step 2: Convert to fraction form
    219,551,787.21/302,978,607.63 = 125,464,863.63/x
  3. Step 3: Cross multiply
    219,551,787.21x = 302,978,607.63 × 125,464,863.63
  4. Step 4: Simplify right side
    219,551,787.21x = 38,013,169,689,105,224
  5. Step 5: Solve for x
    x = 38,013,169,689,105,224/219,551,787.21
  6. Step 6: Final answer
    x = 173,139,878.17

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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.