Home / 319,538,770.40-478,977,481.20-173,664,120.80

Finding the Fourth Proportional to 319,538,770.40, 478,977,481.20 and 173,664,120.80

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Solution

The fourth proportional to 319,538,770.40, 478,977,481.20 and 173,664,120.80 is: 260,316,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,538,770.40 : 478,977,481.20 = 173,664,120.80 : x
  2. Step 2: Convert to fraction form
    319,538,770.40/478,977,481.20 = 173,664,120.80/x
  3. Step 3: Cross multiply
    319,538,770.40x = 478,977,481.20 × 173,664,120.80
  4. Step 4: Simplify right side
    319,538,770.40x = 83,181,203,155,596,528
  5. Step 5: Solve for x
    x = 83,181,203,155,596,528/319,538,770.40
  6. Step 6: Final answer
    x = 260,316,465.05

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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.