Finding the Fourth Proportional to 387,905,094.12, 535,320,378.66 and 211,704,390.76
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Solution
The fourth proportional to 387,905,094.12, 535,320,378.66 and 211,704,390.76 is: 292,158,252.99
Step by Step Solution
- Step 1: Write the proportion equation
387,905,094.12 : 535,320,378.66 = 211,704,390.76 : x - Step 2: Convert to fraction form
387,905,094.12/535,320,378.66 = 211,704,390.76/x - Step 3: Cross multiply
387,905,094.12x = 535,320,378.66 × 211,704,390.76 - Step 4: Simplify right side
387,905,094.12x = 113,329,674,625,627,808 - Step 5: Solve for x
x = 113,329,674,625,627,808/387,905,094.12 - Step 6: Final answer
x = 292,158,252.99
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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.