Home / 368,854,083.68-509,019,131.49-212,218,049.08

Finding the Fourth Proportional to 368,854,083.68, 509,019,131.49 and 212,218,049.08

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Solution

The fourth proportional to 368,854,083.68, 509,019,131.49 and 212,218,049.08 is: 292,861,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,854,083.68 : 509,019,131.49 = 212,218,049.08 : x
  2. Step 2: Convert to fraction form
    368,854,083.68/509,019,131.49 = 212,218,049.08/x
  3. Step 3: Cross multiply
    368,854,083.68x = 509,019,131.49 × 212,218,049.08
  4. Step 4: Simplify right side
    368,854,083.68x = 108,023,047,026,658,688
  5. Step 5: Solve for x
    x = 108,023,047,026,658,688/368,854,083.68
  6. Step 6: Final answer
    x = 292,861,193.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.