Finding the Fourth Proportional to 221,329,497.60, 331,994,246.40 and 144,888,307.20
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Solution
The fourth proportional to 221,329,497.60, 331,994,246.40 and 144,888,307.20 is: 217,332,460.80
Step by Step Solution
- Step 1: Write the proportion equation
221,329,497.60 : 331,994,246.40 = 144,888,307.20 : x - Step 2: Convert to fraction form
221,329,497.60/331,994,246.40 = 144,888,307.20/x - Step 3: Cross multiply
221,329,497.60x = 331,994,246.40 × 144,888,307.20 - Step 4: Simplify right side
221,329,497.60x = 48,102,084,361,035,688 - Step 5: Solve for x
x = 48,102,084,361,035,688/221,329,497.60 - Step 6: Final answer
x = 217,332,460.80
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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.