Finding the Fourth Proportional to 257,445,705.60, 386,187,220.80 and 154,989,129.60
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Solution
The fourth proportional to 257,445,705.60, 386,187,220.80 and 154,989,129.60 is: 232,494,929.66
Step by Step Solution
- Step 1: Write the proportion equation
257,445,705.60 : 386,187,220.80 = 154,989,129.60 : x - Step 2: Convert to fraction form
257,445,705.60/386,187,220.80 = 154,989,129.60/x - Step 3: Cross multiply
257,445,705.60x = 386,187,220.80 × 154,989,129.60 - Step 4: Simplify right side
257,445,705.60x = 59,854,821,214,435,016 - Step 5: Solve for x
x = 59,854,821,214,435,016/257,445,705.60 - Step 6: Final answer
x = 232,494,929.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.