Finding the Fourth Proportional to 353,172,140.94, 487,423,964.15 and 202,523,751.07
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Solution
The fourth proportional to 353,172,140.94, 487,423,964.15 and 202,523,751.07 is: 279,509,389.73
Step by Step Solution
- Step 1: Write the proportion equation
353,172,140.94 : 487,423,964.15 = 202,523,751.07 : x - Step 2: Convert to fraction form
353,172,140.94/487,423,964.15 = 202,523,751.07/x - Step 3: Cross multiply
353,172,140.94x = 487,423,964.15 × 202,523,751.07 - Step 4: Simplify right side
353,172,140.94x = 98,714,929,583,477,872 - Step 5: Solve for x
x = 98,714,929,583,477,872/353,172,140.94 - Step 6: Final answer
x = 279,509,389.73
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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.