Finding the Fourth Proportional to 310,303.48, 465,445.92 and 85,677.62
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Solution
The fourth proportional to 310,303.48, 465,445.92 and 85,677.62 is: 128,513.86
Step by Step Solution
- Step 1: Write the proportion equation
310,303.48 : 465,445.92 = 85,677.62 : x - Step 2: Convert to fraction form
310,303.48/465,445.92 = 85,677.62/x - Step 3: Cross multiply
310,303.48x = 465,445.92 × 85,677.62 - Step 4: Simplify right side
310,303.48x = 39,878,298,664.31 - Step 5: Solve for x
x = 39,878,298,664.31/310,303.48 - Step 6: Final answer
x = 128,513.86
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1.5x scale
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.