Finding the Fourth Proportional to 221,756.25, 306,023.75 and 119,781.71
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Solution
The fourth proportional to 221,756.25, 306,023.75 and 119,781.71 is: 165,298.82
Step by Step Solution
- Step 1: Write the proportion equation
221,756.25 : 306,023.75 = 119,781.71 : x - Step 2: Convert to fraction form
221,756.25/306,023.75 = 119,781.71/x - Step 3: Cross multiply
221,756.25x = 306,023.75 × 119,781.71 - Step 4: Simplify right side
221,756.25x = 36,656,045,946.59 - Step 5: Solve for x
x = 36,656,045,946.59/221,756.25 - Step 6: Final answer
x = 165,298.82
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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.