Finding the Fourth Proportional to 369,074.13, 509,319.99 and 207,980.93
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Solution
The fourth proportional to 369,074.13, 509,319.99 and 207,980.93 is: 287,012.38
Step by Step Solution
- Step 1: Write the proportion equation
369,074.13 : 509,319.99 = 207,980.93 : x - Step 2: Convert to fraction form
369,074.13/509,319.99 = 207,980.93/x - Step 3: Cross multiply
369,074.13x = 509,319.99 × 207,980.93 - Step 4: Simplify right side
369,074.13x = 105,928,842,641.19 - Step 5: Solve for x
x = 105,928,842,641.19/369,074.13 - Step 6: Final answer
x = 287,012.38
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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.