Finding the Fourth Proportional to 211,510.12, 291,878.82 and 136,058.44
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Solution
The fourth proportional to 211,510.12, 291,878.82 and 136,058.44 is: 187,757.34
Step by Step Solution
- Step 1: Write the proportion equation
211,510.12 : 291,878.82 = 136,058.44 : x - Step 2: Convert to fraction form
211,510.12/291,878.82 = 136,058.44/x - Step 3: Cross multiply
211,510.12x = 291,878.82 × 136,058.44 - Step 4: Simplify right side
211,510.12x = 39,712,576,918.24 - Step 5: Solve for x
x = 39,712,576,918.24/211,510.12 - Step 6: Final answer
x = 187,757.34
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.