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Finding the Fourth Proportional to 264,692,318.40, 397,038,477.60 and 80,459,438.40

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Solution

The fourth proportional to 264,692,318.40, 397,038,477.60 and 80,459,438.40 is: 120,689,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,692,318.40 : 397,038,477.60 = 80,459,438.40 : x
  2. Step 2: Convert to fraction form
    264,692,318.40/397,038,477.60 = 80,459,438.40/x
  3. Step 3: Cross multiply
    264,692,318.40x = 397,038,477.60 × 80,459,438.40
  4. Step 4: Simplify right side
    264,692,318.40x = 31,945,492,930,886,984
  5. Step 5: Solve for x
    x = 31,945,492,930,886,984/264,692,318.40
  6. Step 6: Final answer
    x = 120,689,157.60

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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.