Home / 319,125,421.60-478,713,015.60-137,378,528.80

Finding the Fourth Proportional to 319,125,421.60, 478,713,015.60 and 137,378,528.80

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Solution

The fourth proportional to 319,125,421.60, 478,713,015.60 and 137,378,528.80 is: 206,078,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,125,421.60 : 478,713,015.60 = 137,378,528.80 : x
  2. Step 2: Convert to fraction form
    319,125,421.60/478,713,015.60 = 137,378,528.80/x
  3. Step 3: Cross multiply
    319,125,421.60x = 478,713,015.60 × 137,378,528.80
  4. Step 4: Simplify right side
    319,125,421.60x = 65,764,889,800,539,456
  5. Step 5: Solve for x
    x = 65,764,889,800,539,456/319,125,421.60
  6. Step 6: Final answer
    x = 206,078,505.03

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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.