Finding the Fourth Proportional to 395,224,931.55, 545,231,557.92 and 238,541,952.99
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Solution
The fourth proportional to 395,224,931.55, 545,231,557.92 and 238,541,952.99 is: 329,079,949.86
Step by Step Solution
- Step 1: Write the proportion equation
395,224,931.55 : 545,231,557.92 = 238,541,952.99 : x - Step 2: Convert to fraction form
395,224,931.55/545,231,557.92 = 238,541,952.99/x - Step 3: Cross multiply
395,224,931.55x = 545,231,557.92 × 238,541,952.99 - Step 4: Simplify right side
395,224,931.55x = 130,060,600,658,017,104 - Step 5: Solve for x
x = 130,060,600,658,017,104/395,224,931.55 - Step 6: Final answer
x = 329,079,949.86
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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.