Finding the Fourth Proportional to 402,294,407.20, 603,441,610.80 and 198,221,063.20
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Solution
The fourth proportional to 402,294,407.20, 603,441,610.80 and 198,221,063.20 is: 297,331,594.80
Step by Step Solution
- Step 1: Write the proportion equation
402,294,407.20 : 603,441,610.80 = 198,221,063.20 : x - Step 2: Convert to fraction form
402,294,407.20/603,441,610.80 = 198,221,063.20/x - Step 3: Cross multiply
402,294,407.20x = 603,441,610.80 × 198,221,063.20 - Step 4: Simplify right side
402,294,407.20x = 119,614,837,671,896,592 - Step 5: Solve for x
x = 119,614,837,671,896,592/402,294,407.20 - Step 6: Final answer
x = 297,331,594.80
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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.