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Finding the Fourth Proportional to 299,938,963.40, 449,908,445.10 and 84,528,211.40

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Solution

The fourth proportional to 299,938,963.40, 449,908,445.10 and 84,528,211.40 is: 126,792,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,938,963.40 : 449,908,445.10 = 84,528,211.40 : x
  2. Step 2: Convert to fraction form
    299,938,963.40/449,908,445.10 = 84,528,211.40/x
  3. Step 3: Cross multiply
    299,938,963.40x = 449,908,445.10 × 84,528,211.40
  4. Step 4: Simplify right side
    299,938,963.40x = 38,029,956,158,058,096
  5. Step 5: Solve for x
    x = 38,029,956,158,058,096/299,938,963.40
  6. Step 6: Final answer
    x = 126,792,317.10

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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.