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Finding the Fourth Proportional to 209,569,611.60, 314,354,417.40 and 73,240,779.60

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Solution

The fourth proportional to 209,569,611.60, 314,354,417.40 and 73,240,779.60 is: 109,861,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,569,611.60 : 314,354,417.40 = 73,240,779.60 : x
  2. Step 2: Convert to fraction form
    209,569,611.60/314,354,417.40 = 73,240,779.60/x
  3. Step 3: Cross multiply
    209,569,611.60x = 314,354,417.40 × 73,240,779.60
  4. Step 4: Simplify right side
    209,569,611.60x = 23,023,562,601,079,800
  5. Step 5: Solve for x
    x = 23,023,562,601,079,800/209,569,611.60
  6. Step 6: Final answer
    x = 109,861,169.40

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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.