Finding the Fourth Proportional to 258,751,627.20, 387,997,968.96 and 86,168,283.84
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Solution
The fourth proportional to 258,751,627.20, 387,997,968.96 and 86,168,283.84 is: 129,209,309.64
Step by Step Solution
- Step 1: Write the proportion equation
258,751,627.20 : 387,997,968.96 = 86,168,283.84 : x - Step 2: Convert to fraction form
258,751,627.20/387,997,968.96 = 86,168,283.84/x - Step 3: Cross multiply
258,751,627.20x = 387,997,968.96 × 86,168,283.84 - Step 4: Simplify right side
258,751,627.20x = 33,433,119,118,688,788 - Step 5: Solve for x
x = 33,433,119,118,688,788/258,751,627.20 - Step 6: Final answer
x = 129,209,309.64
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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.