Finding the Fourth Proportional to 247,872,456.79, 371,728,415.40 and 81,838,663.17
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Solution
The fourth proportional to 247,872,456.79, 371,728,415.40 and 81,838,663.17 is: 122,731,492.53
Step by Step Solution
- Step 1: Write the proportion equation
247,872,456.79 : 371,728,415.40 = 81,838,663.17 : x - Step 2: Convert to fraction form
247,872,456.79/371,728,415.40 = 81,838,663.17/x - Step 3: Cross multiply
247,872,456.79x = 371,728,415.40 × 81,838,663.17 - Step 4: Simplify right side
247,872,456.79x = 30,421,756,578,638,440 - Step 5: Solve for x
x = 30,421,756,578,638,440/247,872,456.79 - Step 6: Final answer
x = 122,731,492.53
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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.