Finding the Fourth Proportional to 155,642.98, 216,237.35 and 153,776.74
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Solution
The fourth proportional to 155,642.98, 216,237.35 and 153,776.74 is: 213,644.55
Step by Step Solution
- Step 1: Write the proportion equation
155,642.98 : 216,237.35 = 153,776.74 : x - Step 2: Convert to fraction form
155,642.98/216,237.35 = 153,776.74/x - Step 3: Cross multiply
155,642.98x = 216,237.35 × 153,776.74 - Step 4: Simplify right side
155,642.98x = 33,252,274,749.24 - Step 5: Solve for x
x = 33,252,274,749.24/155,642.98 - Step 6: Final answer
x = 213,644.55
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.