Finding the Fourth Proportional to 386,367,278.40, 533,138,345.28 and 261,191,762.46
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Solution
The fourth proportional to 386,367,278.40, 533,138,345.28 and 261,191,762.46 is: 360,411,845.99
Step by Step Solution
- Step 1: Write the proportion equation
386,367,278.40 : 533,138,345.28 = 261,191,762.46 : x - Step 2: Convert to fraction form
386,367,278.40/533,138,345.28 = 261,191,762.46/x - Step 3: Cross multiply
386,367,278.40x = 533,138,345.28 × 261,191,762.46 - Step 4: Simplify right side
386,367,278.40x = 139,251,344,038,691,216 - Step 5: Solve for x
x = 139,251,344,038,691,216/386,367,278.40 - Step 6: Final answer
x = 360,411,845.99
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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.