Finding the Fourth Proportional to 280,607.08, 387,231.47 and 153,283.18
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Solution
The fourth proportional to 280,607.08, 387,231.47 and 153,283.18 is: 211,527.35
Step by Step Solution
- Step 1: Write the proportion equation
280,607.08 : 387,231.47 = 153,283.18 : x - Step 2: Convert to fraction form
280,607.08/387,231.47 = 153,283.18/x - Step 3: Cross multiply
280,607.08x = 387,231.47 × 153,283.18 - Step 4: Simplify right side
280,607.08x = 59,356,071,117.67 - Step 5: Solve for x
x = 59,356,071,117.67/280,607.08 - Step 6: Final answer
x = 211,527.35
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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.