Finding the Fourth Proportional to 577,153.12, 865,729.68 and 156,428.99
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Solution
The fourth proportional to 577,153.12, 865,729.68 and 156,428.99 is: 234,643.49
Step by Step Solution
- Step 1: Write the proportion equation
577,153.12 : 865,729.68 = 156,428.99 : x - Step 2: Convert to fraction form
577,153.12/865,729.68 = 156,428.99/x - Step 3: Cross multiply
577,153.12x = 865,729.68 × 156,428.99 - Step 4: Simplify right side
577,153.12x = 135,425,219,455.42 - Step 5: Solve for x
x = 135,425,219,455.42/577,153.12 - Step 6: Final answer
x = 234,643.49
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Double scale
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Similar ratio
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1.5x scale
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.