Finding the Fourth Proportional to 390,345.29, 538,461.29 and 269,549.99
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Solution
The fourth proportional to 390,345.29, 538,461.29 and 269,549.99 is: 371,830.37
Step by Step Solution
- Step 1: Write the proportion equation
390,345.29 : 538,461.29 = 269,549.99 : x - Step 2: Convert to fraction form
390,345.29/538,461.29 = 269,549.99/x - Step 3: Cross multiply
390,345.29x = 538,461.29 × 269,549.99 - Step 4: Simplify right side
390,345.29x = 145,142,231,294.83 - Step 5: Solve for x
x = 145,142,231,294.83/390,345.29 - Step 6: Final answer
x = 371,830.37
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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.