Home / 261,534,873.60-392,386,291.20-115,912,166.40

Finding the Fourth Proportional to 261,534,873.60, 392,386,291.20 and 115,912,166.40

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Solution

The fourth proportional to 261,534,873.60, 392,386,291.20 and 115,912,166.40 is: 173,905,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,534,873.60 : 392,386,291.20 = 115,912,166.40 : x
  2. Step 2: Convert to fraction form
    261,534,873.60/392,386,291.20 = 115,912,166.40/x
  3. Step 3: Cross multiply
    261,534,873.60x = 392,386,291.20 × 115,912,166.40
  4. Step 4: Simplify right side
    261,534,873.60x = 45,482,345,078,653,256
  5. Step 5: Solve for x
    x = 45,482,345,078,653,256/261,534,873.60
  6. Step 6: Final answer
    x = 173,905,469.86

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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.