Finding the Fourth Proportional to 207,679,482.91, 286,685,931.99 and 129,401,711.74
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Solution
The fourth proportional to 207,679,482.91, 286,685,931.99 and 129,401,711.74 is: 178,629,346.58
Step by Step Solution
- Step 1: Write the proportion equation
207,679,482.91 : 286,685,931.99 = 129,401,711.74 : x - Step 2: Convert to fraction form
207,679,482.91/286,685,931.99 = 129,401,711.74/x - Step 3: Cross multiply
207,679,482.91x = 286,685,931.99 × 129,401,711.74 - Step 4: Simplify right side
207,679,482.91x = 37,097,650,331,283,224 - Step 5: Solve for x
x = 37,097,650,331,283,224/207,679,482.91 - Step 6: Final answer
x = 178,629,346.58
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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.