Finding the Fourth Proportional to 315,307.36, 435,138.35 and 177,533.74
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Solution
The fourth proportional to 315,307.36, 435,138.35 and 177,533.74 is: 245,004.55
Step by Step Solution
- Step 1: Write the proportion equation
315,307.36 : 435,138.35 = 177,533.74 : x - Step 2: Convert to fraction form
315,307.36/435,138.35 = 177,533.74/x - Step 3: Cross multiply
315,307.36x = 435,138.35 × 177,533.74 - Step 4: Simplify right side
315,307.36x = 77,251,736,717.41 - Step 5: Solve for x
x = 77,251,736,717.41/315,307.36 - Step 6: Final answer
x = 245,004.55
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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.