Finding the Fourth Proportional to 311,979,918.65, 430,980,741.02 and 249,173,557.07
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Solution
The fourth proportional to 311,979,918.65, 430,980,741.02 and 249,173,557.07 is: 344,217,681.49
Step by Step Solution
- Step 1: Write the proportion equation
311,979,918.65 : 430,980,741.02 = 249,173,557.07 : x - Step 2: Convert to fraction form
311,979,918.65/430,980,741.02 = 249,173,557.07/x - Step 3: Cross multiply
311,979,918.65x = 430,980,741.02 × 249,173,557.07 - Step 4: Simplify right side
311,979,918.65x = 107,389,004,267,085,888 - Step 5: Solve for x
x = 107,389,004,267,085,888/311,979,918.65 - Step 6: Final answer
x = 344,217,681.49
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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.