Finding the Fourth Proportional to 418,905.64, 628,270.62 and 138,359.08
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Solution
The fourth proportional to 418,905.64, 628,270.62 and 138,359.08 is: 207,509.61
Step by Step Solution
- Step 1: Write the proportion equation
418,905.64 : 628,270.62 = 138,359.08 : x - Step 2: Convert to fraction form
418,905.64/628,270.62 = 138,359.08/x - Step 3: Cross multiply
418,905.64x = 628,270.62 × 138,359.08 - Step 4: Simplify right side
418,905.64x = 86,926,944,974.23 - Step 5: Solve for x
x = 86,926,944,974.23/418,905.64 - Step 6: Final answer
x = 207,509.61
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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.