Finding the Fourth Proportional to 287,518,603.38, 431,124,459.67 and 149,204,944.95
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Solution
The fourth proportional to 287,518,603.38, 431,124,459.67 and 149,204,944.95 is: 223,727,788.45
Step by Step Solution
- Step 1: Write the proportion equation
287,518,603.38 : 431,124,459.67 = 149,204,944.95 : x - Step 2: Convert to fraction form
287,518,603.38/431,124,459.67 = 149,204,944.95/x - Step 3: Cross multiply
287,518,603.38x = 431,124,459.67 × 149,204,944.95 - Step 4: Simplify right side
287,518,603.38x = 64,325,901,271,660,840 - Step 5: Solve for x
x = 64,325,901,271,660,840/287,518,603.38 - Step 6: Final answer
x = 223,727,788.45
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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.