Finding the Fourth Proportional to 426,990,108.66, 589,241,993.49 and 238,817,953.32
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Solution
The fourth proportional to 426,990,108.66, 589,241,993.49 and 238,817,953.32 is: 329,566,338.99
Step by Step Solution
- Step 1: Write the proportion equation
426,990,108.66 : 589,241,993.49 = 238,817,953.32 : x - Step 2: Convert to fraction form
426,990,108.66/589,241,993.49 = 238,817,953.32/x - Step 3: Cross multiply
426,990,108.66x = 589,241,993.49 × 238,817,953.32 - Step 4: Simplify right side
426,990,108.66x = 140,721,566,895,478,560 - Step 5: Solve for x
x = 140,721,566,895,478,560/426,990,108.66 - Step 6: Final answer
x = 329,566,338.99
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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.