Finding the Fourth Proportional to 368,139.70, 551,431.95 and 305,931.70
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Solution
The fourth proportional to 368,139.70, 551,431.95 and 305,931.70 is: 458,251.35
Step by Step Solution
- Step 1: Write the proportion equation
368,139.70 : 551,431.95 = 305,931.70 : x - Step 2: Convert to fraction form
368,139.70/551,431.95 = 305,931.70/x - Step 3: Cross multiply
368,139.70x = 551,431.95 × 305,931.70 - Step 4: Simplify right side
368,139.70x = 168,700,513,897.82 - Step 5: Solve for x
x = 168,700,513,897.82/368,139.70 - Step 6: Final answer
x = 458,251.35
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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.