Finding the Fourth Proportional to 291,588,181.74, 402,391,728.86 and 159,429,269.84
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Solution
The fourth proportional to 291,588,181.74, 402,391,728.86 and 159,429,269.84 is: 220,012,413.18
Step by Step Solution
- Step 1: Write the proportion equation
291,588,181.74 : 402,391,728.86 = 159,429,269.84 : x - Step 2: Convert to fraction form
291,588,181.74/402,391,728.86 = 159,429,269.84/x - Step 3: Cross multiply
291,588,181.74x = 402,391,728.86 × 159,429,269.84 - Step 4: Simplify right side
291,588,181.74x = 64,153,019,518,995,960 - Step 5: Solve for x
x = 64,153,019,518,995,960/291,588,181.74 - Step 6: Final answer
x = 220,012,413.18
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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.