Finding the Fourth Proportional to 249,128,315.28, 343,790,411.64 and 137,616,756.18
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Solution
The fourth proportional to 249,128,315.28, 343,790,411.64 and 137,616,756.18 is: 189,907,442.69
Step by Step Solution
- Step 1: Write the proportion equation
249,128,315.28 : 343,790,411.64 = 137,616,756.18 : x - Step 2: Convert to fraction form
249,128,315.28/343,790,411.64 = 137,616,756.18/x - Step 3: Cross multiply
249,128,315.28x = 343,790,411.64 × 137,616,756.18 - Step 4: Simplify right side
249,128,315.28x = 47,311,321,255,683,712 - Step 5: Solve for x
x = 47,311,321,255,683,712/249,128,315.28 - Step 6: Final answer
x = 189,907,442.69
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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.