Home / 312,968,779.20-469,453,168.80-196,571,390.40

Finding the Fourth Proportional to 312,968,779.20, 469,453,168.80 and 196,571,390.40

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Solution

The fourth proportional to 312,968,779.20, 469,453,168.80 and 196,571,390.40 is: 294,857,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,968,779.20 : 469,453,168.80 = 196,571,390.40 : x
  2. Step 2: Convert to fraction form
    312,968,779.20/469,453,168.80 = 196,571,390.40/x
  3. Step 3: Cross multiply
    312,968,779.20x = 469,453,168.80 × 196,571,390.40
  4. Step 4: Simplify right side
    312,968,779.20x = 92,281,062,118,701,904
  5. Step 5: Solve for x
    x = 92,281,062,118,701,904/312,968,779.20
  6. Step 6: Final answer
    x = 294,857,085.60

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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.