Finding the Fourth Proportional to 177,979,307.68, 245,636,327.32 and 128,579,507.20
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Solution
The fourth proportional to 177,979,307.68, 245,636,327.32 and 128,579,507.20 is: 177,457,696.23
Step by Step Solution
- Step 1: Write the proportion equation
177,979,307.68 : 245,636,327.32 = 128,579,507.20 : x - Step 2: Convert to fraction form
177,979,307.68/245,636,327.32 = 128,579,507.20/x - Step 3: Cross multiply
177,979,307.68x = 245,636,327.32 × 128,579,507.20 - Step 4: Simplify right side
177,979,307.68x = 31,583,797,917,223,496 - Step 5: Solve for x
x = 31,583,797,917,223,496/177,979,307.68 - Step 6: Final answer
x = 177,457,696.23
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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.