Finding the Fourth Proportional to 387,248,245.49, 534,389,005.28 and 211,032,645.05
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Solution
The fourth proportional to 387,248,245.49, 534,389,005.28 and 211,032,645.05 is: 291,217,653.23
Step by Step Solution
- Step 1: Write the proportion equation
387,248,245.49 : 534,389,005.28 = 211,032,645.05 : x - Step 2: Convert to fraction form
387,248,245.49/534,389,005.28 = 211,032,645.05/x - Step 3: Cross multiply
387,248,245.49x = 534,389,005.28 × 211,032,645.05 - Step 4: Simplify right side
387,248,245.49x = 112,773,525,266,149,696 - Step 5: Solve for x
x = 112,773,525,266,149,696/387,248,245.49 - Step 6: Final answer
x = 291,217,653.23
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.