Finding the Fourth Proportional to 245,612.78, 368,419.18 and 87,831.66
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Solution
The fourth proportional to 245,612.78, 368,419.18 and 87,831.66 is: 131,747.49
Step by Step Solution
- Step 1: Write the proportion equation
245,612.78 : 368,419.18 = 87,831.66 : x - Step 2: Convert to fraction form
245,612.78/368,419.18 = 87,831.66/x - Step 3: Cross multiply
245,612.78x = 368,419.18 × 87,831.66 - Step 4: Simplify right side
245,612.78x = 32,358,868,155.24 - Step 5: Solve for x
x = 32,358,868,155.24/245,612.78 - Step 6: Final answer
x = 131,747.49
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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.