Finding the Fourth Proportional to 389,818,919.49, 537,950,108.90 and 224,806,488.99
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Solution
The fourth proportional to 389,818,919.49, 537,950,108.90 and 224,806,488.99 is: 310,232,954.81
Step by Step Solution
- Step 1: Write the proportion equation
389,818,919.49 : 537,950,108.90 = 224,806,488.99 : x - Step 2: Convert to fraction form
389,818,919.49/537,950,108.90 = 224,806,488.99/x - Step 3: Cross multiply
389,818,919.49x = 537,950,108.90 × 224,806,488.99 - Step 4: Simplify right side
389,818,919.49x = 120,934,675,232,473,120 - Step 5: Solve for x
x = 120,934,675,232,473,120/389,818,919.49 - Step 6: Final answer
x = 310,232,954.81
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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.