Finding the Fourth Proportional to 457,631.78, 686,440.31 and 142,088.99
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Solution
The fourth proportional to 457,631.78, 686,440.31 and 142,088.99 is: 213,131.19
Step by Step Solution
- Step 1: Write the proportion equation
457,631.78 : 686,440.31 = 142,088.99 : x - Step 2: Convert to fraction form
457,631.78/686,440.31 = 142,088.99/x - Step 3: Cross multiply
457,631.78x = 686,440.31 × 142,088.99 - Step 4: Simplify right side
457,631.78x = 97,535,606,200.54 - Step 5: Solve for x
x = 97,535,606,200.54/457,631.78 - Step 6: Final answer
x = 213,131.19
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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.