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Finding the Fourth Proportional to 279,938,307.60, 419,907,461.40 and 75,459,056.40

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Solution

The fourth proportional to 279,938,307.60, 419,907,461.40 and 75,459,056.40 is: 113,188,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,307.60 : 419,907,461.40 = 75,459,056.40 : x
  2. Step 2: Convert to fraction form
    279,938,307.60/419,907,461.40 = 75,459,056.40/x
  3. Step 3: Cross multiply
    279,938,307.60x = 419,907,461.40 × 75,459,056.40
  4. Step 4: Simplify right side
    279,938,307.60x = 31,685,820,812,563,424
  5. Step 5: Solve for x
    x = 31,685,820,812,563,424/279,938,307.60
  6. Step 6: Final answer
    x = 113,188,584.60

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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.