Finding the Fourth Proportional to 280,420.08, 386,963.28 and 153,070.08
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Solution
The fourth proportional to 280,420.08, 386,963.28 and 153,070.08 is: 211,227.74
Step by Step Solution
- Step 1: Write the proportion equation
280,420.08 : 386,963.28 = 153,070.08 : x - Step 2: Convert to fraction form
280,420.08/386,963.28 = 153,070.08/x - Step 3: Cross multiply
280,420.08x = 386,963.28 × 153,070.08 - Step 4: Simplify right side
280,420.08x = 59,232,500,226.66 - Step 5: Solve for x
x = 59,232,500,226.66/280,420.08 - Step 6: Final answer
x = 211,227.74
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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.