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Finding the Fourth Proportional to 205,385.94, 308,075.58 and 79,053.63

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Solution

The fourth proportional to 205,385.94, 308,075.58 and 79,053.63 is: 118,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,385.94 : 308,075.58 = 79,053.63 : x
  2. Step 2: Convert to fraction form
    205,385.94/308,075.58 = 79,053.63/x
  3. Step 3: Cross multiply
    205,385.94x = 308,075.58 × 79,053.63
  4. Step 4: Simplify right side
    205,385.94x = 24,354,492,913.36
  5. Step 5: Solve for x
    x = 24,354,492,913.36/205,385.94
  6. Step 6: Final answer
    x = 118,579.16

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1.5x scale

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.