Finding the Fourth Proportional to 279,948.56, 386,328.99 and 159,090.08
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Solution
The fourth proportional to 279,948.56, 386,328.99 and 159,090.08 is: 219,544.30
Step by Step Solution
- Step 1: Write the proportion equation
279,948.56 : 386,328.99 = 159,090.08 : x - Step 2: Convert to fraction form
279,948.56/386,328.99 = 159,090.08/x - Step 3: Cross multiply
279,948.56x = 386,328.99 × 159,090.08 - Step 4: Simplify right side
279,948.56x = 61,461,108,590.36 - Step 5: Solve for x
x = 61,461,108,590.36/279,948.56 - Step 6: Final answer
x = 219,544.30
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1.5x scale
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.