Finding the Fourth Proportional to 230,392.08, 317,936.16 and 128,417.40
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Solution
The fourth proportional to 230,392.08, 317,936.16 and 128,417.40 is: 177,213.28
Step by Step Solution
- Step 1: Write the proportion equation
230,392.08 : 317,936.16 = 128,417.40 : x - Step 2: Convert to fraction form
230,392.08/317,936.16 = 128,417.40/x - Step 3: Cross multiply
230,392.08x = 317,936.16 × 128,417.40 - Step 4: Simplify right side
230,392.08x = 40,828,535,033.18 - Step 5: Solve for x
x = 40,828,535,033.18/230,392.08 - Step 6: Final answer
x = 177,213.28
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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.