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Finding the Fourth Proportional to 259,315.80, 388,973.70 and 247,068.60

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Solution

The fourth proportional to 259,315.80, 388,973.70 and 247,068.60 is: 370,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,315.80 : 388,973.70 = 247,068.60 : x
  2. Step 2: Convert to fraction form
    259,315.80/388,973.70 = 247,068.60/x
  3. Step 3: Cross multiply
    259,315.80x = 388,973.70 × 247,068.60
  4. Step 4: Simplify right side
    259,315.80x = 96,103,187,495.82
  5. Step 5: Solve for x
    x = 96,103,187,495.82/259,315.80
  6. Step 6: Final answer
    x = 370,602.90

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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.