Finding the Fourth Proportional to 258,069,594.65, 387,225,460.71 and 128,687,293.80
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Solution
The fourth proportional to 258,069,594.65, 387,225,460.71 and 128,687,293.80 is: 193,091,312.05
Step by Step Solution
- Step 1: Write the proportion equation
258,069,594.65 : 387,225,460.71 = 128,687,293.80 : x - Step 2: Convert to fraction form
258,069,594.65/387,225,460.71 = 128,687,293.80/x - Step 3: Cross multiply
258,069,594.65x = 387,225,460.71 × 128,687,293.80 - Step 4: Simplify right side
258,069,594.65x = 49,830,996,629,228,120 - Step 5: Solve for x
x = 49,830,996,629,228,120/258,069,594.65 - Step 6: Final answer
x = 193,091,312.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.