Finding the Fourth Proportional to 257,366,325.12, 355,165,957.89 and 139,891,357.68
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Solution
The fourth proportional to 257,366,325.12, 355,165,957.89 and 139,891,357.68 is: 193,050,306.90
Step by Step Solution
- Step 1: Write the proportion equation
257,366,325.12 : 355,165,957.89 = 139,891,357.68 : x - Step 2: Convert to fraction form
257,366,325.12/355,165,957.89 = 139,891,357.68/x - Step 3: Cross multiply
257,366,325.12x = 355,165,957.89 × 139,891,357.68 - Step 4: Simplify right side
257,366,325.12x = 49,684,648,050,949,808 - Step 5: Solve for x
x = 49,684,648,050,949,808/257,366,325.12 - Step 6: Final answer
x = 193,050,306.90
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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.