Finding the Fourth Proportional to 315,552,615.40, 473,104,974.30 and 121,389,005.80
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Solution
The fourth proportional to 315,552,615.40, 473,104,974.30 and 121,389,005.80 is: 181,997,358.50
Step by Step Solution
- Step 1: Write the proportion equation
315,552,615.40 : 473,104,974.30 = 121,389,005.80 : x - Step 2: Convert to fraction form
315,552,615.40/473,104,974.30 = 121,389,005.80/x - Step 3: Cross multiply
315,552,615.40x = 473,104,974.30 × 121,389,005.80 - Step 4: Simplify right side
315,552,615.40x = 57,429,742,469,311,552 - Step 5: Solve for x
x = 57,429,742,469,311,552/315,552,615.40 - Step 6: Final answer
x = 181,997,358.50
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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.