Finding the Fourth Proportional to 389,168,753.60, 537,052,863.36 and 212,956,763.84
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Solution
The fourth proportional to 389,168,753.60, 537,052,863.36 and 212,956,763.84 is: 293,880,325.01
Step by Step Solution
- Step 1: Write the proportion equation
389,168,753.60 : 537,052,863.36 = 212,956,763.84 : x - Step 2: Convert to fraction form
389,168,753.60/537,052,863.36 = 212,956,763.84/x - Step 3: Cross multiply
389,168,753.60x = 537,052,863.36 × 212,956,763.84 - Step 4: Simplify right side
389,168,753.60x = 114,369,039,792,151,312 - Step 5: Solve for x
x = 114,369,039,792,151,312/389,168,753.60 - Step 6: Final answer
x = 293,880,325.01
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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.