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Finding the Fourth Proportional to 208,656,347.70, 312,984,521.55 and 72,296,411.70

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Solution

The fourth proportional to 208,656,347.70, 312,984,521.55 and 72,296,411.70 is: 108,444,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,656,347.70 : 312,984,521.55 = 72,296,411.70 : x
  2. Step 2: Convert to fraction form
    208,656,347.70/312,984,521.55 = 72,296,411.70/x
  3. Step 3: Cross multiply
    208,656,347.70x = 312,984,521.55 × 72,296,411.70
  4. Step 4: Simplify right side
    208,656,347.70x = 22,627,657,825,706,324
  5. Step 5: Solve for x
    x = 22,627,657,825,706,324/208,656,347.70
  6. Step 6: Final answer
    x = 108,444,617.55

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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.