Finding the Fourth Proportional to 398,056.14, 549,139.95 and 268,953.06
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Solution
The fourth proportional to 398,056.14, 549,139.95 and 268,953.06 is: 371,035.28
Step by Step Solution
- Step 1: Write the proportion equation
398,056.14 : 549,139.95 = 268,953.06 : x - Step 2: Convert to fraction form
398,056.14/549,139.95 = 268,953.06/x - Step 3: Cross multiply
398,056.14x = 549,139.95 × 268,953.06 - Step 4: Simplify right side
398,056.14x = 147,692,869,920.75 - Step 5: Solve for x
x = 147,692,869,920.75/398,056.14 - Step 6: Final answer
x = 371,035.28
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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.