Finding the Fourth Proportional to 280,117.60, 420,176.40 and 93,129.10
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Solution
The fourth proportional to 280,117.60, 420,176.40 and 93,129.10 is: 139,693.65
Step by Step Solution
- Step 1: Write the proportion equation
280,117.60 : 420,176.40 = 93,129.10 : x - Step 2: Convert to fraction form
280,117.60/420,176.40 = 93,129.10/x - Step 3: Cross multiply
280,117.60x = 420,176.40 × 93,129.10 - Step 4: Simplify right side
280,117.60x = 39,130,649,973.24 - Step 5: Solve for x
x = 39,130,649,973.24/280,117.60 - Step 6: Final answer
x = 139,693.65
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1.5x scale
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.