Home / 212,870,219.40-319,305,329.10-76,537,888.20

Finding the Fourth Proportional to 212,870,219.40, 319,305,329.10 and 76,537,888.20

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Solution

The fourth proportional to 212,870,219.40, 319,305,329.10 and 76,537,888.20 is: 114,806,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,870,219.40 : 319,305,329.10 = 76,537,888.20 : x
  2. Step 2: Convert to fraction form
    212,870,219.40/319,305,329.10 = 76,537,888.20/x
  3. Step 3: Cross multiply
    212,870,219.40x = 319,305,329.10 × 76,537,888.20
  4. Step 4: Simplify right side
    212,870,219.40x = 24,438,955,580,320,008
  5. Step 5: Solve for x
    x = 24,438,955,580,320,008/212,870,219.40
  6. Step 6: Final answer
    x = 114,806,832.30

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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.