Finding the Fourth Proportional to 310,378,861.32, 465,579,290.16 and 77,210,787.12
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Solution
The fourth proportional to 310,378,861.32, 465,579,290.16 and 77,210,787.12 is: 115,818,916.62
Step by Step Solution
- Step 1: Write the proportion equation
310,378,861.32 : 465,579,290.16 = 77,210,787.12 : x - Step 2: Convert to fraction form
310,378,861.32/465,579,290.16 = 77,210,787.12/x - Step 3: Cross multiply
310,378,861.32x = 465,579,290.16 × 77,210,787.12 - Step 4: Simplify right side
310,378,861.32x = 35,947,743,460,024,476 - Step 5: Solve for x
x = 35,947,743,460,024,476/310,378,861.32 - Step 6: Final answer
x = 115,818,916.62
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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.