Finding the Fourth Proportional to 257,267,646.99, 355,028,579.89 and 139,793,335.65
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Solution
The fourth proportional to 257,267,646.99, 355,028,579.89 and 139,793,335.65 is: 192,914,383.19
Step by Step Solution
- Step 1: Write the proportion equation
257,267,646.99 : 355,028,579.89 = 139,793,335.65 : x - Step 2: Convert to fraction form
257,267,646.99/355,028,579.89 = 139,793,335.65/x - Step 3: Cross multiply
257,267,646.99x = 355,028,579.89 × 139,793,335.65 - Step 4: Simplify right side
257,267,646.99x = 49,630,629,433,556,128 - Step 5: Solve for x
x = 49,630,629,433,556,128/257,267,646.99 - Step 6: Final answer
x = 192,914,383.19
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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.