Home / 209,953,801.20-314,930,701.80-128,324,463.60

Finding the Fourth Proportional to 209,953,801.20, 314,930,701.80 and 128,324,463.60

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Solution

The fourth proportional to 209,953,801.20, 314,930,701.80 and 128,324,463.60 is: 192,486,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,801.20 : 314,930,701.80 = 128,324,463.60 : x
  2. Step 2: Convert to fraction form
    209,953,801.20/314,930,701.80 = 128,324,463.60/x
  3. Step 3: Cross multiply
    209,953,801.20x = 314,930,701.80 × 128,324,463.60
  4. Step 4: Simplify right side
    209,953,801.20x = 40,413,313,379,656,552
  5. Step 5: Solve for x
    x = 40,413,313,379,656,552/209,953,801.20
  6. Step 6: Final answer
    x = 192,486,695.40

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1.5x scale

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.