Finding the Fourth Proportional to 257,267,631.72, 355,028,558.80 and 139,793,320.36
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Solution
The fourth proportional to 257,267,631.72, 355,028,558.80 and 139,793,320.36 is: 192,914,362.08
Step by Step Solution
- Step 1: Write the proportion equation
257,267,631.72 : 355,028,558.80 = 139,793,320.36 : x - Step 2: Convert to fraction form
257,267,631.72/355,028,558.80 = 139,793,320.36/x - Step 3: Cross multiply
257,267,631.72x = 355,028,558.80 × 139,793,320.36 - Step 4: Simplify right side
257,267,631.72x = 49,630,621,057,277,504 - Step 5: Solve for x
x = 49,630,621,057,277,504/257,267,631.72 - Step 6: Final answer
x = 192,914,362.08
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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.