Finding the Fourth Proportional to 390,230.08, 538,518.40 and 211,382.08
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Solution
The fourth proportional to 390,230.08, 538,518.40 and 211,382.08 is: 291,707.75
Step by Step Solution
- Step 1: Write the proportion equation
390,230.08 : 538,518.40 = 211,382.08 : x - Step 2: Convert to fraction form
390,230.08/538,518.40 = 211,382.08/x - Step 3: Cross multiply
390,230.08x = 538,518.40 × 211,382.08 - Step 4: Simplify right side
390,230.08x = 113,833,139,510.27 - Step 5: Solve for x
x = 113,833,139,510.27/390,230.08 - Step 6: Final answer
x = 291,707.75
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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.