Finding the Fourth Proportional to 398,356.64, 549,725.08 and 217,069.84
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Solution
The fourth proportional to 398,356.64, 549,725.08 and 217,069.84 is: 299,552.52
Step by Step Solution
- Step 1: Write the proportion equation
398,356.64 : 549,725.08 = 217,069.84 : x - Step 2: Convert to fraction form
398,356.64/549,725.08 = 217,069.84/x - Step 3: Cross multiply
398,356.64x = 549,725.08 × 217,069.84 - Step 4: Simplify right side
398,356.64x = 119,328,735,159.59 - Step 5: Solve for x
x = 119,328,735,159.59/398,356.64 - Step 6: Final answer
x = 299,552.52
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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.