Finding the Fourth Proportional to 287,394,275.12, 396,604,258.80 and 155,235,271.04
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Solution
The fourth proportional to 287,394,275.12, 396,604,258.80 and 155,235,271.04 is: 214,224,759.99
Step by Step Solution
- Step 1: Write the proportion equation
287,394,275.12 : 396,604,258.80 = 155,235,271.04 : x - Step 2: Convert to fraction form
287,394,275.12/396,604,258.80 = 155,235,271.04/x - Step 3: Cross multiply
287,394,275.12x = 396,604,258.80 × 155,235,271.04 - Step 4: Simplify right side
287,394,275.12x = 61,566,969,610,436,304 - Step 5: Solve for x
x = 61,566,969,610,436,304/287,394,275.12 - Step 6: Final answer
x = 214,224,759.99
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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.