Finding the Fourth Proportional to 390,676.52, 539,108.10 and 218,565.08
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Solution
The fourth proportional to 390,676.52, 539,108.10 and 218,565.08 is: 301,605.55
Step by Step Solution
- Step 1: Write the proportion equation
390,676.52 : 539,108.10 = 218,565.08 : x - Step 2: Convert to fraction form
390,676.52/539,108.10 = 218,565.08/x - Step 3: Cross multiply
390,676.52x = 539,108.10 × 218,565.08 - Step 4: Simplify right side
390,676.52x = 117,830,205,005.15 - Step 5: Solve for x
x = 117,830,205,005.15/390,676.52 - Step 6: Final answer
x = 301,605.55
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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.