Finding the Fourth Proportional to 319,615,816.20, 479,423,724.30 and 216,303,685.80
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Solution
The fourth proportional to 319,615,816.20, 479,423,724.30 and 216,303,685.80 is: 324,455,528.70
Step by Step Solution
- Step 1: Write the proportion equation
319,615,816.20 : 479,423,724.30 = 216,303,685.80 : x - Step 2: Convert to fraction form
319,615,816.20/479,423,724.30 = 216,303,685.80/x - Step 3: Cross multiply
319,615,816.20x = 479,423,724.30 × 216,303,685.80 - Step 4: Simplify right side
319,615,816.20x = 103,701,118,626,053,040 - Step 5: Solve for x
x = 103,701,118,626,053,040/319,615,816.20 - Step 6: Final answer
x = 324,455,528.70
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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.