Home / 212,870,246.40-319,305,369.60-76,537,915.20

Finding the Fourth Proportional to 212,870,246.40, 319,305,369.60 and 76,537,915.20

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Solution

The fourth proportional to 212,870,246.40, 319,305,369.60 and 76,537,915.20 is: 114,806,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,870,246.40 : 319,305,369.60 = 76,537,915.20 : x
  2. Step 2: Convert to fraction form
    212,870,246.40/319,305,369.60 = 76,537,915.20/x
  3. Step 3: Cross multiply
    212,870,246.40x = 319,305,369.60 × 76,537,915.20
  4. Step 4: Simplify right side
    212,870,246.40x = 24,438,967,301,349,460
  5. Step 5: Solve for x
    x = 24,438,967,301,349,460/212,870,246.40
  6. Step 6: Final answer
    x = 114,806,872.80

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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.