Home / 319,053,287.68-478,579,905.60-100,856,878.72

Finding the Fourth Proportional to 319,053,287.68, 478,579,905.60 and 100,856,878.72

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Solution

The fourth proportional to 319,053,287.68, 478,579,905.60 and 100,856,878.72 is: 151,285,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,053,287.68 : 478,579,905.60 = 100,856,878.72 : x
  2. Step 2: Convert to fraction form
    319,053,287.68/478,579,905.60 = 100,856,878.72/x
  3. Step 3: Cross multiply
    319,053,287.68x = 478,579,905.60 × 100,856,878.72
  4. Step 4: Simplify right side
    319,053,287.68x = 48,268,075,496,928,248
  5. Step 5: Solve for x
    x = 48,268,075,496,928,248/319,053,287.68
  6. Step 6: Final answer
    x = 151,285,309.89

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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.