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Finding the Fourth Proportional to 163,905,897.80, 245,858,846.70 and 156,347,625.80

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Solution

The fourth proportional to 163,905,897.80, 245,858,846.70 and 156,347,625.80 is: 234,521,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,905,897.80 : 245,858,846.70 = 156,347,625.80 : x
  2. Step 2: Convert to fraction form
    163,905,897.80/245,858,846.70 = 156,347,625.80/x
  3. Step 3: Cross multiply
    163,905,897.80x = 245,858,846.70 × 156,347,625.80
  4. Step 4: Simplify right side
    163,905,897.80x = 38,439,446,963,471,168
  5. Step 5: Solve for x
    x = 38,439,446,963,471,168/163,905,897.80
  6. Step 6: Final answer
    x = 234,521,438.70

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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.