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Finding the Fourth Proportional to 299,938,758.90, 449,908,138.35 and 84,528,006.90

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Solution

The fourth proportional to 299,938,758.90, 449,908,138.35 and 84,528,006.90 is: 126,792,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,938,758.90 : 449,908,138.35 = 84,528,006.90 : x
  2. Step 2: Convert to fraction form
    299,938,758.90/449,908,138.35 = 84,528,006.90/x
  3. Step 3: Cross multiply
    299,938,758.90x = 449,908,138.35 × 84,528,006.90
  4. Step 4: Simplify right side
    299,938,758.90x = 38,029,838,222,814,960
  5. Step 5: Solve for x
    x = 38,029,838,222,814,960/299,938,758.90
  6. Step 6: Final answer
    x = 126,792,010.35

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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.