Finding the Fourth Proportional to 423,564.17, 635,432.65 and 143,075.21
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Solution
The fourth proportional to 423,564.17, 635,432.65 and 143,075.21 is: 214,641.99
Step by Step Solution
- Step 1: Write the proportion equation
423,564.17 : 635,432.65 = 143,075.21 : x - Step 2: Convert to fraction form
423,564.17/635,432.65 = 143,075.21/x - Step 3: Cross multiply
423,564.17x = 635,432.65 × 143,075.21 - Step 4: Simplify right side
423,564.17x = 90,914,656,304.76 - Step 5: Solve for x
x = 90,914,656,304.76/423,564.17 - Step 6: Final answer
x = 214,641.99
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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.