Finding the Fourth Proportional to 420,249,140.19, 580,098,569.74 and 252,993,175.74
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Solution
The fourth proportional to 420,249,140.19, 580,098,569.74 and 252,993,175.74 is: 349,223,746.97
Step by Step Solution
- Step 1: Write the proportion equation
420,249,140.19 : 580,098,569.74 = 252,993,175.74 : x - Step 2: Convert to fraction form
420,249,140.19/580,098,569.74 = 252,993,175.74/x - Step 3: Cross multiply
420,249,140.19x = 580,098,569.74 × 252,993,175.74 - Step 4: Simplify right side
420,249,140.19x = 146,760,979,400,121,984 - Step 5: Solve for x
x = 146,760,979,400,121,984/420,249,140.19 - Step 6: Final answer
x = 349,223,746.97
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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.