Finding the Fourth Proportional to 393,146,296.56, 542,541,252.60 and 216,934,158.96
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Solution
The fourth proportional to 393,146,296.56, 542,541,252.60 and 216,934,158.96 is: 299,368,788.07
Step by Step Solution
- Step 1: Write the proportion equation
393,146,296.56 : 542,541,252.60 = 216,934,158.96 : x - Step 2: Convert to fraction form
393,146,296.56/542,541,252.60 = 216,934,158.96/x - Step 3: Cross multiply
393,146,296.56x = 542,541,252.60 × 216,934,158.96 - Step 4: Simplify right side
393,146,296.56x = 117,695,730,333,885,920 - Step 5: Solve for x
x = 117,695,730,333,885,920/393,146,296.56 - Step 6: Final answer
x = 299,368,788.07
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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.