Finding the Fourth Proportional to 457,632.78, 686,441.80 and 142,089.99
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Solution
The fourth proportional to 457,632.78, 686,441.80 and 142,089.99 is: 213,132.70
Step by Step Solution
- Step 1: Write the proportion equation
457,632.78 : 686,441.80 = 142,089.99 : x - Step 2: Convert to fraction form
457,632.78/686,441.80 = 142,089.99/x - Step 3: Cross multiply
457,632.78x = 686,441.80 × 142,089.99 - Step 4: Simplify right side
457,632.78x = 97,536,508,497.58 - Step 5: Solve for x
x = 97,536,508,497.58/457,632.78 - Step 6: Final answer
x = 213,132.70
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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.