Finding the Fourth Proportional to 518,671.80, 778,117.05 and 163,721.70
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Solution
The fourth proportional to 518,671.80, 778,117.05 and 163,721.70 is: 245,617.07
Step by Step Solution
- Step 1: Write the proportion equation
518,671.80 : 778,117.05 = 163,721.70 : x - Step 2: Convert to fraction form
518,671.80/778,117.05 = 163,721.70/x - Step 3: Cross multiply
518,671.80x = 778,117.05 × 163,721.70 - Step 4: Simplify right side
518,671.80x = 127,394,646,224.99 - Step 5: Solve for x
x = 127,394,646,224.99/518,671.80 - Step 6: Final answer
x = 245,617.07
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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.