Finding the Fourth Proportional to 260,172,971.66, 390,282,396.70 and 73,428,578.12
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Solution
The fourth proportional to 260,172,971.66, 390,282,396.70 and 73,428,578.12 is: 110,149,341.31
Step by Step Solution
- Step 1: Write the proportion equation
260,172,971.66 : 390,282,396.70 = 73,428,578.12 : x - Step 2: Convert to fraction form
260,172,971.66/390,282,396.70 = 73,428,578.12/x - Step 3: Cross multiply
260,172,971.66x = 390,282,396.70 × 73,428,578.12 - Step 4: Simplify right side
260,172,971.66x = 28,657,881,454,946,780 - Step 5: Solve for x
x = 28,657,881,454,946,780/260,172,971.66 - Step 6: Final answer
x = 110,149,341.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.