Finding the Fourth Proportional to 318,930,723.60, 478,371,202.20 and 124,804,438.80
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Solution
The fourth proportional to 318,930,723.60, 478,371,202.20 and 124,804,438.80 is: 187,196,920.87
Step by Step Solution
- Step 1: Write the proportion equation
318,930,723.60 : 478,371,202.20 = 124,804,438.80 : x - Step 2: Convert to fraction form
318,930,723.60/478,371,202.20 = 124,804,438.80/x - Step 3: Cross multiply
318,930,723.60x = 478,371,202.20 × 124,804,438.80 - Step 4: Simplify right side
318,930,723.60x = 59,702,849,428,652,320 - Step 5: Solve for x
x = 59,702,849,428,652,320/318,930,723.60 - Step 6: Final answer
x = 187,196,920.87
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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.