Finding the Fourth Proportional to 392,472,854.61, 541,588,135.71 and 216,250,988.41
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Solution
The fourth proportional to 392,472,854.61, 541,588,135.71 and 216,250,988.41 is: 298,412,917.69
Step by Step Solution
- Step 1: Write the proportion equation
392,472,854.61 : 541,588,135.71 = 216,250,988.41 : x - Step 2: Convert to fraction form
392,472,854.61/541,588,135.71 = 216,250,988.41/x - Step 3: Cross multiply
392,472,854.61x = 541,588,135.71 × 216,250,988.41 - Step 4: Simplify right side
392,472,854.61x = 117,118,969,658,416,720 - Step 5: Solve for x
x = 117,118,969,658,416,720/392,472,854.61 - Step 6: Final answer
x = 298,412,917.69
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.