Finding the Fourth Proportional to 219,343,478.25, 302,726,487.63 and 138,882,948.65
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Solution
The fourth proportional to 219,343,478.25, 302,726,487.63 and 138,882,948.65 is: 191,679,039.52
Step by Step Solution
- Step 1: Write the proportion equation
219,343,478.25 : 302,726,487.63 = 138,882,948.65 : x - Step 2: Convert to fraction form
219,343,478.25/302,726,487.63 = 138,882,948.65/x - Step 3: Cross multiply
219,343,478.25x = 302,726,487.63 × 138,882,948.65 - Step 4: Simplify right side
219,343,478.25x = 42,043,547,234,998,520 - Step 5: Solve for x
x = 42,043,547,234,998,520/219,343,478.25 - Step 6: Final answer
x = 191,679,039.52
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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.