Home / 208,606,862.40-312,785,877.60-127,885,761.60

Finding the Fourth Proportional to 208,606,862.40, 312,785,877.60 and 127,885,761.60

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Solution

The fourth proportional to 208,606,862.40, 312,785,877.60 and 127,885,761.60 is: 191,752,369.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,606,862.40 : 312,785,877.60 = 127,885,761.60 : x
  2. Step 2: Convert to fraction form
    208,606,862.40/312,785,877.60 = 127,885,761.60/x
  3. Step 3: Cross multiply
    208,606,862.40x = 312,785,877.60 × 127,885,761.60
  4. Step 4: Simplify right side
    208,606,862.40x = 40,000,860,174,600,384
  5. Step 5: Solve for x
    x = 40,000,860,174,600,384/208,606,862.40
  6. Step 6: Final answer
    x = 191,752,369.57

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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.