Finding the Fourth Proportional to 316,711,979.60, 475,067,018.97 and 80,361,043.65
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Solution
The fourth proportional to 316,711,979.60, 475,067,018.97 and 80,361,043.65 is: 120,541,324.32
Step by Step Solution
- Step 1: Write the proportion equation
316,711,979.60 : 475,067,018.97 = 80,361,043.65 : x - Step 2: Convert to fraction form
316,711,979.60/475,067,018.97 = 80,361,043.65/x - Step 3: Cross multiply
316,711,979.60x = 475,067,018.97 × 80,361,043.65 - Step 4: Simplify right side
316,711,979.60x = 38,176,881,448,123,552 - Step 5: Solve for x
x = 38,176,881,448,123,552/316,711,979.60 - Step 6: Final answer
x = 120,541,324.32
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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.