Finding the Fourth Proportional to 287,862,036.50, 431,794,319.75 and 91,126,416.18
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Solution
The fourth proportional to 287,862,036.50, 431,794,319.75 and 91,126,416.18 is: 136,690,024.72
Step by Step Solution
- Step 1: Write the proportion equation
287,862,036.50 : 431,794,319.75 = 91,126,416.18 : x - Step 2: Convert to fraction form
287,862,036.50/431,794,319.75 = 91,126,416.18/x - Step 3: Cross multiply
287,862,036.50x = 431,794,319.75 × 91,126,416.18 - Step 4: Simplify right side
287,862,036.50x = 39,347,868,885,242,864 - Step 5: Solve for x
x = 39,347,868,885,242,864/287,862,036.50 - Step 6: Final answer
x = 136,690,024.72
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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.