Finding the Fourth Proportional to 315,102,848.70, 472,335,408.45 and 185,643,821.10
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Solution
The fourth proportional to 315,102,848.70, 472,335,408.45 and 185,643,821.10 is: 278,277,871.58
Step by Step Solution
- Step 1: Write the proportion equation
315,102,848.70 : 472,335,408.45 = 185,643,821.10 : x - Step 2: Convert to fraction form
315,102,848.70/472,335,408.45 = 185,643,821.10/x - Step 3: Cross multiply
315,102,848.70x = 472,335,408.45 × 185,643,821.10 - Step 4: Simplify right side
315,102,848.70x = 87,686,150,065,487,216 - Step 5: Solve for x
x = 87,686,150,065,487,216/315,102,848.70 - Step 6: Final answer
x = 278,277,871.58
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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.