Finding the Fourth Proportional to 282,893.18, 390,390.44 and 153,831.70
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Solution
The fourth proportional to 282,893.18, 390,390.44 and 153,831.70 is: 212,286.58
Step by Step Solution
- Step 1: Write the proportion equation
282,893.18 : 390,390.44 = 153,831.70 : x - Step 2: Convert to fraction form
282,893.18/390,390.44 = 153,831.70/x - Step 3: Cross multiply
282,893.18x = 390,390.44 × 153,831.70 - Step 4: Simplify right side
282,893.18x = 60,054,423,303.81 - Step 5: Solve for x
x = 60,054,423,303.81/282,893.18 - Step 6: Final answer
x = 212,286.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.