Finding the Fourth Proportional to 217,420,291.80, 326,130,437.70 and 73,813,123.80
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Solution
The fourth proportional to 217,420,291.80, 326,130,437.70 and 73,813,123.80 is: 110,719,685.70
Step by Step Solution
- Step 1: Write the proportion equation
217,420,291.80 : 326,130,437.70 = 73,813,123.80 : x - Step 2: Convert to fraction form
217,420,291.80/326,130,437.70 = 73,813,123.80/x - Step 3: Cross multiply
217,420,291.80x = 326,130,437.70 × 73,813,123.80 - Step 4: Simplify right side
217,420,291.80x = 24,072,706,372,898,284 - Step 5: Solve for x
x = 24,072,706,372,898,284/217,420,291.80 - Step 6: Final answer
x = 110,719,685.70
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1.5x scale
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.