Finding the Fourth Proportional to 258,294,694.59, 387,237,437.10 and 128,835,666.99
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Solution
The fourth proportional to 258,294,694.59, 387,237,437.10 and 128,835,666.99 is: 193,151,444.99
Step by Step Solution
- Step 1: Write the proportion equation
258,294,694.59 : 387,237,437.10 = 128,835,666.99 : x - Step 2: Convert to fraction form
258,294,694.59/387,237,437.10 = 128,835,666.99/x - Step 3: Cross multiply
258,294,694.59x = 387,237,437.10 × 128,835,666.99 - Step 4: Simplify right side
258,294,694.59x = 49,889,993,492,276,672 - Step 5: Solve for x
x = 49,889,993,492,276,672/258,294,694.59 - Step 6: Final answer
x = 193,151,444.99
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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.