Finding the Fourth Proportional to 207,455,430.80, 310,970,569.80 and 121,149,412.40
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Solution
The fourth proportional to 207,455,430.80, 310,970,569.80 and 121,149,412.40 is: 181,599,978.65
Step by Step Solution
- Step 1: Write the proportion equation
207,455,430.80 : 310,970,569.80 = 121,149,412.40 : x - Step 2: Convert to fraction form
207,455,430.80/310,970,569.80 = 121,149,412.40/x - Step 3: Cross multiply
207,455,430.80x = 310,970,569.80 × 121,149,412.40 - Step 4: Simplify right side
207,455,430.80x = 37,673,901,804,963,192 - Step 5: Solve for x
x = 37,673,901,804,963,192/207,455,430.80 - Step 6: Final answer
x = 181,599,978.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.