Finding the Fourth Proportional to 307,987.60, 461,938.20 and 97,646.80
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Solution
The fourth proportional to 307,987.60, 461,938.20 and 97,646.80 is: 146,456.50
Step by Step Solution
- Step 1: Write the proportion equation
307,987.60 : 461,938.20 = 97,646.80 : x - Step 2: Convert to fraction form
307,987.60/461,938.20 = 97,646.80/x - Step 3: Cross multiply
307,987.60x = 461,938.20 × 97,646.80 - Step 4: Simplify right side
307,987.60x = 45,106,787,027.76 - Step 5: Solve for x
x = 45,106,787,027.76/307,987.60 - Step 6: Final answer
x = 146,456.50
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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.