Finding the Fourth Proportional to 425,417.13, 638,217.96 and 125,918.76
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Solution
The fourth proportional to 425,417.13, 638,217.96 and 125,918.76 is: 188,905.45
Step by Step Solution
- Step 1: Write the proportion equation
425,417.13 : 638,217.96 = 125,918.76 : x - Step 2: Convert to fraction form
425,417.13/638,217.96 = 125,918.76/x - Step 3: Cross multiply
425,417.13x = 638,217.96 × 125,918.76 - Step 4: Simplify right side
425,417.13x = 80,363,614,132.93 - Step 5: Solve for x
x = 80,363,614,132.93/425,417.13 - Step 6: Final answer
x = 188,905.45
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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.