Home / 319,020,385.40-478,530,578.10-103,631,406.20

Finding the Fourth Proportional to 319,020,385.40, 478,530,578.10 and 103,631,406.20

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Solution

The fourth proportional to 319,020,385.40, 478,530,578.10 and 103,631,406.20 is: 155,447,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,020,385.40 : 478,530,578.10 = 103,631,406.20 : x
  2. Step 2: Convert to fraction form
    319,020,385.40/478,530,578.10 = 103,631,406.20/x
  3. Step 3: Cross multiply
    319,020,385.40x = 478,530,578.10 × 103,631,406.20
  4. Step 4: Simplify right side
    319,020,385.40x = 49,590,796,718,201,928
  5. Step 5: Solve for x
    x = 49,590,796,718,201,928/319,020,385.40
  6. Step 6: Final answer
    x = 155,447,109.30

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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.