Finding the Fourth Proportional to 421,539,328.77, 581,785,122.21 and 242,889,001.38
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Solution
The fourth proportional to 421,539,328.77, 581,785,122.21 and 242,889,001.38 is: 335,221,882.53
Step by Step Solution
- Step 1: Write the proportion equation
421,539,328.77 : 581,785,122.21 = 242,889,001.38 : x - Step 2: Convert to fraction form
421,539,328.77/581,785,122.21 = 242,889,001.38/x - Step 3: Cross multiply
421,539,328.77x = 581,785,122.21 × 242,889,001.38 - Step 4: Simplify right side
421,539,328.77x = 141,309,207,351,328,160 - Step 5: Solve for x
x = 141,309,207,351,328,160/421,539,328.77 - Step 6: Final answer
x = 335,221,882.53
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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.