Finding the Fourth Proportional to 286,368.20, 429,552.30 and 99,379.70
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Solution
The fourth proportional to 286,368.20, 429,552.30 and 99,379.70 is: 149,069.55
Step by Step Solution
- Step 1: Write the proportion equation
286,368.20 : 429,552.30 = 99,379.70 : x - Step 2: Convert to fraction form
286,368.20/429,552.30 = 99,379.70/x - Step 3: Cross multiply
286,368.20x = 429,552.30 × 99,379.70 - Step 4: Simplify right side
286,368.20x = 42,688,778,708.31 - Step 5: Solve for x
x = 42,688,778,708.31/286,368.20 - Step 6: Final answer
x = 149,069.55
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1.5x scale
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.