Finding the Fourth Proportional to 207,221,438.60, 310,748,177.10 and 70,836,619.40
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Solution
The fourth proportional to 207,221,438.60, 310,748,177.10 and 70,836,619.40 is: 106,226,221.09
Step by Step Solution
- Step 1: Write the proportion equation
207,221,438.60 : 310,748,177.10 = 70,836,619.40 : x - Step 2: Convert to fraction form
207,221,438.60/310,748,177.10 = 70,836,619.40/x - Step 3: Cross multiply
207,221,438.60x = 310,748,177.10 × 70,836,619.40 - Step 4: Simplify right side
207,221,438.60x = 22,012,350,350,476,500 - Step 5: Solve for x
x = 22,012,350,350,476,500/207,221,438.60 - Step 6: Final answer
x = 106,226,221.09
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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.