Finding the Fourth Proportional to 219,543,746.91, 329,322,443.81 and 81,403,728.99
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Solution
The fourth proportional to 219,543,746.91, 329,322,443.81 and 81,403,728.99 is: 122,108,123.52
Step by Step Solution
- Step 1: Write the proportion equation
219,543,746.91 : 329,322,443.81 = 81,403,728.99 : x - Step 2: Convert to fraction form
219,543,746.91/329,322,443.81 = 81,403,728.99/x - Step 3: Cross multiply
219,543,746.91x = 329,322,443.81 × 81,403,728.99 - Step 4: Simplify right side
219,543,746.91x = 26,808,074,965,826,724 - Step 5: Solve for x
x = 26,808,074,965,826,724/219,543,746.91 - Step 6: Final answer
x = 122,108,123.52
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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.