Finding the Fourth Proportional to 359,209.12, 538,778.68 and 145,989.81
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Solution
The fourth proportional to 359,209.12, 538,778.68 and 145,989.81 is: 218,970.49
Step by Step Solution
- Step 1: Write the proportion equation
359,209.12 : 538,778.68 = 145,989.81 : x - Step 2: Convert to fraction form
359,209.12/538,778.68 = 145,989.81/x - Step 3: Cross multiply
359,209.12x = 538,778.68 × 145,989.81 - Step 4: Simplify right side
359,209.12x = 78,656,197,125.25 - Step 5: Solve for x
x = 78,656,197,125.25/359,209.12 - Step 6: Final answer
x = 218,970.49
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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.