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Finding the Fourth Proportional to 357,354,806.40, 536,032,209.60 and 127,583,337.60

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Solution

The fourth proportional to 357,354,806.40, 536,032,209.60 and 127,583,337.60 is: 191,375,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,354,806.40 : 536,032,209.60 = 127,583,337.60 : x
  2. Step 2: Convert to fraction form
    357,354,806.40/536,032,209.60 = 127,583,337.60/x
  3. Step 3: Cross multiply
    357,354,806.40x = 536,032,209.60 × 127,583,337.60
  4. Step 4: Simplify right side
    357,354,806.40x = 68,388,778,361,870,760
  5. Step 5: Solve for x
    x = 68,388,778,361,870,760/357,354,806.40
  6. Step 6: Final answer
    x = 191,375,006.40

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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.