Home / 368,678,538.12-508,791,839.22-212,045,688.84

Finding the Fourth Proportional to 368,678,538.12, 508,791,839.22 and 212,045,688.84

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Solution

The fourth proportional to 368,678,538.12, 508,791,839.22 and 212,045,688.84 is: 292,631,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,678,538.12 : 508,791,839.22 = 212,045,688.84 : x
  2. Step 2: Convert to fraction form
    368,678,538.12/508,791,839.22 = 212,045,688.84/x
  3. Step 3: Cross multiply
    368,678,538.12x = 508,791,839.22 × 212,045,688.84
  4. Step 4: Simplify right side
    368,678,538.12x = 107,887,116,023,575,440
  5. Step 5: Solve for x
    x = 107,887,116,023,575,440/368,678,538.12
  6. Step 6: Final answer
    x = 292,631,940.48

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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.