Home / 231,487,491.76-319,307,431.16-137,334,980.28

Finding the Fourth Proportional to 231,487,491.76, 319,307,431.16 and 137,334,980.28

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Solution

The fourth proportional to 231,487,491.76, 319,307,431.16 and 137,334,980.28 is: 189,436,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,487,491.76 : 319,307,431.16 = 137,334,980.28 : x
  2. Step 2: Convert to fraction form
    231,487,491.76/319,307,431.16 = 137,334,980.28/x
  3. Step 3: Cross multiply
    231,487,491.76x = 319,307,431.16 × 137,334,980.28
  4. Step 4: Simplify right side
    231,487,491.76x = 43,852,079,761,616,064
  5. Step 5: Solve for x
    x = 43,852,079,761,616,064/231,487,491.76
  6. Step 6: Final answer
    x = 189,436,065.98

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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.