Finding the Fourth Proportional to 315,235,207.80, 472,056,549.30 and 206,943,521.40
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Solution
The fourth proportional to 315,235,207.80, 472,056,549.30 and 206,943,521.40 is: 309,892,557.03
Step by Step Solution
- Step 1: Write the proportion equation
315,235,207.80 : 472,056,549.30 = 206,943,521.40 : x - Step 2: Convert to fraction form
315,235,207.80/472,056,549.30 = 206,943,521.40/x - Step 3: Cross multiply
315,235,207.80x = 472,056,549.30 × 206,943,521.40 - Step 4: Simplify right side
315,235,207.80x = 97,689,044,612,074,704 - Step 5: Solve for x
x = 97,689,044,612,074,704/315,235,207.80 - Step 6: Final answer
x = 309,892,557.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.