Finding the Fourth Proportional to 229,139,848.87, 316,239,917.44 and 128,684,795.02
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Solution
The fourth proportional to 229,139,848.87, 316,239,917.44 and 128,684,795.02 is: 177,600,138.75
Step by Step Solution
- Step 1: Write the proportion equation
229,139,848.87 : 316,239,917.44 = 128,684,795.02 : x - Step 2: Convert to fraction form
229,139,848.87/316,239,917.44 = 128,684,795.02/x - Step 3: Cross multiply
229,139,848.87x = 316,239,917.44 × 128,684,795.02 - Step 4: Simplify right side
229,139,848.87x = 40,695,268,952,908,120 - Step 5: Solve for x
x = 40,695,268,952,908,120/229,139,848.87 - Step 6: Final answer
x = 177,600,138.75
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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.