Finding the Fourth Proportional to 313,831.84, 472,455.28 and 285,931.12
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Solution
The fourth proportional to 313,831.84, 472,455.28 and 285,931.12 is: 430,452.40
Step by Step Solution
- Step 1: Write the proportion equation
313,831.84 : 472,455.28 = 285,931.12 : x - Step 2: Convert to fraction form
313,831.84/472,455.28 = 285,931.12/x - Step 3: Cross multiply
313,831.84x = 472,455.28 × 285,931.12 - Step 4: Simplify right side
313,831.84x = 135,089,667,360.31 - Step 5: Solve for x
x = 135,089,667,360.31/313,831.84 - Step 6: Final answer
x = 430,452.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.