Finding the Fourth Proportional to 369,490,889.84, 509,876,681.28 and 202,226,809.20
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Solution
The fourth proportional to 369,490,889.84, 509,876,681.28 and 202,226,809.20 is: 279,061,641.78
Step by Step Solution
- Step 1: Write the proportion equation
369,490,889.84 : 509,876,681.28 = 202,226,809.20 : x - Step 2: Convert to fraction form
369,490,889.84/509,876,681.28 = 202,226,809.20/x - Step 3: Cross multiply
369,490,889.84x = 509,876,681.28 × 202,226,809.20 - Step 4: Simplify right side
369,490,889.84x = 103,110,734,340,739,760 - Step 5: Solve for x
x = 103,110,734,340,739,760/369,490,889.84 - Step 6: Final answer
x = 279,061,641.78
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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.