Finding the Fourth Proportional to 230,355.93, 317,916.99 and 128,390.70
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Solution
The fourth proportional to 230,355.93, 317,916.99 and 128,390.70 is: 177,193.55
Step by Step Solution
- Step 1: Write the proportion equation
230,355.93 : 317,916.99 = 128,390.70 : x - Step 2: Convert to fraction form
230,355.93/317,916.99 = 128,390.70/x - Step 3: Cross multiply
230,355.93x = 317,916.99 × 128,390.70 - Step 4: Simplify right side
230,355.93x = 40,817,584,887.99 - Step 5: Solve for x
x = 40,817,584,887.99/230,355.93 - Step 6: Final answer
x = 177,193.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.