Finding the Fourth Proportional to 418,904.64, 628,269.12 and 138,358.08
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Solution
The fourth proportional to 418,904.64, 628,269.12 and 138,358.08 is: 207,508.11
Step by Step Solution
- Step 1: Write the proportion equation
418,904.64 : 628,269.12 = 138,358.08 : x - Step 2: Convert to fraction form
418,904.64/628,269.12 = 138,358.08/x - Step 3: Cross multiply
418,904.64x = 628,269.12 × 138,358.08 - Step 4: Simplify right side
418,904.64x = 86,926,109,166.49 - Step 5: Solve for x
x = 86,926,109,166.49/418,904.64 - Step 6: Final answer
x = 207,508.11
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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.