Finding the Fourth Proportional to 438,865,646.40, 658,277,474.40 and 147,704,212.80
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Solution
The fourth proportional to 438,865,646.40, 658,277,474.40 and 147,704,212.80 is: 221,549,253.08
Step by Step Solution
- Step 1: Write the proportion equation
438,865,646.40 : 658,277,474.40 = 147,704,212.80 : x - Step 2: Convert to fraction form
438,865,646.40/658,277,474.40 = 147,704,212.80/x - Step 3: Cross multiply
438,865,646.40x = 658,277,474.40 × 147,704,212.80 - Step 4: Simplify right side
438,865,646.40x = 97,230,356,160,224,160 - Step 5: Solve for x
x = 97,230,356,160,224,160/438,865,646.40 - Step 6: Final answer
x = 221,549,253.08
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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.