Finding the Fourth Proportional to 212,338,848.68, 292,957,534.32 and 173,113,188.56
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Solution
The fourth proportional to 212,338,848.68, 292,957,534.32 and 173,113,188.56 is: 238,839,068.75
Step by Step Solution
- Step 1: Write the proportion equation
212,338,848.68 : 292,957,534.32 = 173,113,188.56 : x - Step 2: Convert to fraction form
212,338,848.68/292,957,534.32 = 173,113,188.56/x - Step 3: Cross multiply
212,338,848.68x = 292,957,534.32 × 173,113,188.56 - Step 4: Simplify right side
212,338,848.68x = 50,714,812,878,810,832 - Step 5: Solve for x
x = 50,714,812,878,810,832/212,338,848.68 - Step 6: Final answer
x = 238,839,068.75
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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.