Finding the Fourth Proportional to 279,406,947.11, 385,564,213.70 and 153,952,122.44
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Solution
The fourth proportional to 279,406,947.11, 385,564,213.70 and 153,952,122.44 is: 212,444,356.34
Step by Step Solution
- Step 1: Write the proportion equation
279,406,947.11 : 385,564,213.70 = 153,952,122.44 : x - Step 2: Convert to fraction form
279,406,947.11/385,564,213.70 = 153,952,122.44/x - Step 3: Cross multiply
279,406,947.11x = 385,564,213.70 × 153,952,122.44 - Step 4: Simplify right side
279,406,947.11x = 59,358,429,033,327,144 - Step 5: Solve for x
x = 59,358,429,033,327,144/279,406,947.11 - Step 6: Final answer
x = 212,444,356.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.