Home / 213,931,299.18-320,927,418.28-66,391,606.30

Finding the Fourth Proportional to 213,931,299.18, 320,927,418.28 and 66,391,606.30

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Solution

The fourth proportional to 213,931,299.18, 320,927,418.28 and 66,391,606.30 is: 99,596,865.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,931,299.18 : 320,927,418.28 = 66,391,606.30 : x
  2. Step 2: Convert to fraction form
    213,931,299.18/320,927,418.28 = 66,391,606.30/x
  3. Step 3: Cross multiply
    213,931,299.18x = 320,927,418.28 × 66,391,606.30
  4. Step 4: Simplify right side
    213,931,299.18x = 21,306,886,805,321,180
  5. Step 5: Solve for x
    x = 21,306,886,805,321,180/213,931,299.18
  6. Step 6: Final answer
    x = 99,596,865.38

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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.