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Finding the Fourth Proportional to 299,938,820.40, 449,908,230.60 and 84,528,068.40

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Solution

The fourth proportional to 299,938,820.40, 449,908,230.60 and 84,528,068.40 is: 126,792,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,938,820.40 : 449,908,230.60 = 84,528,068.40 : x
  2. Step 2: Convert to fraction form
    299,938,820.40/449,908,230.60 = 84,528,068.40/x
  3. Step 3: Cross multiply
    299,938,820.40x = 449,908,230.60 × 84,528,068.40
  4. Step 4: Simplify right side
    299,938,820.40x = 38,029,873,689,879,776
  5. Step 5: Solve for x
    x = 38,029,873,689,879,776/299,938,820.40
  6. Step 6: Final answer
    x = 126,792,102.60

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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.