Finding the Fourth Proportional to 315,021,741.70, 472,390,894.95 and 120,868,629.70
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Solution
The fourth proportional to 315,021,741.70, 472,390,894.95 and 120,868,629.70 is: 181,248,569.85
Step by Step Solution
- Step 1: Write the proportion equation
315,021,741.70 : 472,390,894.95 = 120,868,629.70 : x - Step 2: Convert to fraction form
315,021,741.70/472,390,894.95 = 120,868,629.70/x - Step 3: Cross multiply
315,021,741.70x = 472,390,894.95 × 120,868,629.70 - Step 4: Simplify right side
315,021,741.70x = 57,097,240,155,363,152 - Step 5: Solve for x
x = 57,097,240,155,363,152/315,021,741.70 - Step 6: Final answer
x = 181,248,569.85
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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.