Finding the Fourth Proportional to 315,681.60, 435,649.95 and 172,443.99
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Solution
The fourth proportional to 315,681.60, 435,649.95 and 172,443.99 is: 237,977.81
Step by Step Solution
- Step 1: Write the proportion equation
315,681.60 : 435,649.95 = 172,443.99 : x - Step 2: Convert to fraction form
315,681.60/435,649.95 = 172,443.99/x - Step 3: Cross multiply
315,681.60x = 435,649.95 × 172,443.99 - Step 4: Simplify right side
315,681.60x = 75,125,215,621.30 - Step 5: Solve for x
x = 75,125,215,621.30/315,681.60 - Step 6: Final answer
x = 237,977.81
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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.