Finding the Fourth Proportional to 390,874.95, 539,420.63 and 229,727.70
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Solution
The fourth proportional to 390,874.95, 539,420.63 and 229,727.70 is: 317,031.98
Step by Step Solution
- Step 1: Write the proportion equation
390,874.95 : 539,420.63 = 229,727.70 : x - Step 2: Convert to fraction form
390,874.95/539,420.63 = 229,727.70/x - Step 3: Cross multiply
390,874.95x = 539,420.63 × 229,727.70 - Step 4: Simplify right side
390,874.95x = 123,919,859,513.81 - Step 5: Solve for x
x = 123,919,859,513.81/390,874.95 - Step 6: Final answer
x = 317,031.98
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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.