Finding the Fourth Proportional to 260,090,809.19, 390,222,940.11 and 172,995,683.99
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Solution
The fourth proportional to 260,090,809.19, 390,222,940.11 and 172,995,683.99 is: 259,551,210.75
Step by Step Solution
- Step 1: Write the proportion equation
260,090,809.19 : 390,222,940.11 = 172,995,683.99 : x - Step 2: Convert to fraction form
260,090,809.19/390,222,940.11 = 172,995,683.99/x - Step 3: Cross multiply
260,090,809.19x = 390,222,940.11 × 172,995,683.99 - Step 4: Simplify right side
260,090,809.19x = 67,506,884,431,288,912 - Step 5: Solve for x
x = 67,506,884,431,288,912/260,090,809.19 - Step 6: Final answer
x = 259,551,210.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.