Finding the Fourth Proportional to 478,534.32, 717,895.89 and 136,980.99
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Solution
The fourth proportional to 478,534.32, 717,895.89 and 136,980.99 is: 205,498.51
Step by Step Solution
- Step 1: Write the proportion equation
478,534.32 : 717,895.89 = 136,980.99 : x - Step 2: Convert to fraction form
478,534.32/717,895.89 = 136,980.99/x - Step 3: Cross multiply
478,534.32x = 717,895.89 × 136,980.99 - Step 4: Simplify right side
478,534.32x = 98,338,089,729.13 - Step 5: Solve for x
x = 98,338,089,729.13/478,534.32 - Step 6: Final answer
x = 205,498.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.