Finding the Fourth Proportional to 282,707.31, 390,139.12 and 153,645.79
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Solution
The fourth proportional to 282,707.31, 390,139.12 and 153,645.79 is: 212,032.83
Step by Step Solution
- Step 1: Write the proportion equation
282,707.31 : 390,139.12 = 153,645.79 : x - Step 2: Convert to fraction form
282,707.31/390,139.12 = 153,645.79/x - Step 3: Cross multiply
282,707.31x = 390,139.12 × 153,645.79 - Step 4: Simplify right side
282,707.31x = 59,943,231,937.19 - Step 5: Solve for x
x = 59,943,231,937.19/282,707.31 - Step 6: Final answer
x = 212,032.83
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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.