Finding the Fourth Proportional to 278,982,572.80, 385,049,251.20 and 184,730,478.08
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Solution
The fourth proportional to 278,982,572.80, 385,049,251.20 and 184,730,478.08 is: 254,963,353.25
Step by Step Solution
- Step 1: Write the proportion equation
278,982,572.80 : 385,049,251.20 = 184,730,478.08 : x - Step 2: Convert to fraction form
278,982,572.80/385,049,251.20 = 184,730,478.08/x - Step 3: Cross multiply
278,982,572.80x = 385,049,251.20 × 184,730,478.08 - Step 4: Simplify right side
278,982,572.80x = 71,130,332,258,522,016 - Step 5: Solve for x
x = 71,130,332,258,522,016/278,982,572.80 - Step 6: Final answer
x = 254,963,353.25
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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.