Finding the Fourth Proportional to 817,129.12, 1,225,693.68 and 256,208.80
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Solution
The fourth proportional to 817,129.12, 1,225,693.68 and 256,208.80 is: 384,313.20
Step by Step Solution
- Step 1: Write the proportion equation
817,129.12 : 1,225,693.68 = 256,208.80 : x - Step 2: Convert to fraction form
817,129.12/1,225,693.68 = 256,208.80/x - Step 3: Cross multiply
817,129.12x = 1,225,693.68 × 256,208.80 - Step 4: Simplify right side
817,129.12x = 314,033,506,920.38 - Step 5: Solve for x
x = 314,033,506,920.38/817,129.12 - Step 6: Final answer
x = 384,313.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.