Finding the Fourth Proportional to 390,727.08, 539,177.28 and 218,615.16
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Solution
The fourth proportional to 390,727.08, 539,177.28 and 218,615.16 is: 301,674.32
Step by Step Solution
- Step 1: Write the proportion equation
390,727.08 : 539,177.28 = 218,615.16 : x - Step 2: Convert to fraction form
390,727.08/539,177.28 = 218,615.16/x - Step 3: Cross multiply
390,727.08x = 539,177.28 × 218,615.16 - Step 4: Simplify right side
390,727.08x = 117,872,327,335.57 - Step 5: Solve for x
x = 117,872,327,335.57/390,727.08 - Step 6: Final answer
x = 301,674.32
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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.