Finding the Fourth Proportional to 390,146.18, 538,423.62 and 229,047.98
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Solution
The fourth proportional to 390,146.18, 538,423.62 and 229,047.98 is: 316,099.06
Step by Step Solution
- Step 1: Write the proportion equation
390,146.18 : 538,423.62 = 229,047.98 : x - Step 2: Convert to fraction form
390,146.18/538,423.62 = 229,047.98/x - Step 3: Cross multiply
390,146.18x = 538,423.62 × 229,047.98 - Step 4: Simplify right side
390,146.18x = 123,324,842,545.29 - Step 5: Solve for x
x = 123,324,842,545.29/390,146.18 - Step 6: Final answer
x = 316,099.06
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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.