Finding the Fourth Proportional to 226,403,643.42, 312,438,085.95 and 128,623,864.86
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Solution
The fourth proportional to 226,403,643.42, 312,438,085.95 and 128,623,864.86 is: 177,501,534.59
Step by Step Solution
- Step 1: Write the proportion equation
226,403,643.42 : 312,438,085.95 = 128,623,864.86 : x - Step 2: Convert to fraction form
226,403,643.42/312,438,085.95 = 128,623,864.86/x - Step 3: Cross multiply
226,403,643.42x = 312,438,085.95 × 128,623,864.86 - Step 4: Simplify right side
226,403,643.42x = 40,186,994,144,349,864 - Step 5: Solve for x
x = 40,186,994,144,349,864/226,403,643.42 - Step 6: Final answer
x = 177,501,534.59
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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.