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Finding the Fourth Proportional to 315,799.09, 435,742.54 and 188,486.53

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Solution

The fourth proportional to 315,799.09, 435,742.54 and 188,486.53 is: 260,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,799.09 : 435,742.54 = 188,486.53 : x
  2. Step 2: Convert to fraction form
    315,799.09/435,742.54 = 188,486.53/x
  3. Step 3: Cross multiply
    315,799.09x = 435,742.54 × 188,486.53
  4. Step 4: Simplify right side
    315,799.09x = 82,131,599,337.99
  5. Step 5: Solve for x
    x = 82,131,599,337.99/315,799.09
  6. Step 6: Final answer
    x = 260,075.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.