Finding the Fourth Proportional to 315,021,749.70, 472,390,906.95 and 120,868,637.70
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Solution
The fourth proportional to 315,021,749.70, 472,390,906.95 and 120,868,637.70 is: 181,248,581.85
Step by Step Solution
- Step 1: Write the proportion equation
315,021,749.70 : 472,390,906.95 = 120,868,637.70 : x - Step 2: Convert to fraction form
315,021,749.70/472,390,906.95 = 120,868,637.70/x - Step 3: Cross multiply
315,021,749.70x = 472,390,906.95 × 120,868,637.70 - Step 4: Simplify right side
315,021,749.70x = 57,097,245,384,913,960 - Step 5: Solve for x
x = 57,097,245,384,913,960/315,021,749.70 - Step 6: Final answer
x = 181,248,581.85
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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.