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Finding the Fourth Proportional to 215,793,070.40, 323,689,605.60 and 215,793,070.40

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Solution

The fourth proportional to 215,793,070.40, 323,689,605.60 and 215,793,070.40 is: 323,689,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,793,070.40 : 323,689,605.60 = 215,793,070.40 : x
  2. Step 2: Convert to fraction form
    215,793,070.40/323,689,605.60 = 215,793,070.40/x
  3. Step 3: Cross multiply
    215,793,070.40x = 323,689,605.60 × 215,793,070.40
  4. Step 4: Simplify right side
    215,793,070.40x = 69,849,973,848,989,040
  5. Step 5: Solve for x
    x = 69,849,973,848,989,040/215,793,070.40
  6. Step 6: Final answer
    x = 323,689,605.60

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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.