Finding the Fourth Proportional to 382,813.30, 528,312.86 and 221,671.19
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Solution
The fourth proportional to 382,813.30, 528,312.86 and 221,671.19 is: 305,923.91
Step by Step Solution
- Step 1: Write the proportion equation
382,813.30 : 528,312.86 = 221,671.19 : x - Step 2: Convert to fraction form
382,813.30/528,312.86 = 221,671.19/x - Step 3: Cross multiply
382,813.30x = 528,312.86 × 221,671.19 - Step 4: Simplify right side
382,813.30x = 117,111,742,659.10 - Step 5: Solve for x
x = 117,111,742,659.10/382,813.30 - Step 6: Final answer
x = 305,923.91
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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.