Finding the Fourth Proportional to 306,701.80, 423,247.62 and 172,565.80
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Solution
The fourth proportional to 306,701.80, 423,247.62 and 172,565.80 is: 238,140.32
Step by Step Solution
- Step 1: Write the proportion equation
306,701.80 : 423,247.62 = 172,565.80 : x - Step 2: Convert to fraction form
306,701.80/423,247.62 = 172,565.80/x - Step 3: Cross multiply
306,701.80x = 423,247.62 × 172,565.80 - Step 4: Simplify right side
306,701.80x = 73,038,064,143.40 - Step 5: Solve for x
x = 73,038,064,143.40/306,701.80 - Step 6: Final answer
x = 238,140.32
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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.