Finding the Fourth Proportional to 310,779,215.12, 428,773,463.70 and 221,485,224.98
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Solution
The fourth proportional to 310,779,215.12, 428,773,463.70 and 221,485,224.98 is: 305,577,022.06
Step by Step Solution
- Step 1: Write the proportion equation
310,779,215.12 : 428,773,463.70 = 221,485,224.98 : x - Step 2: Convert to fraction form
310,779,215.12/428,773,463.70 = 221,485,224.98/x - Step 3: Cross multiply
310,779,215.12x = 428,773,463.70 × 221,485,224.98 - Step 4: Simplify right side
310,779,215.12x = 94,966,987,073,048,352 - Step 5: Solve for x
x = 94,966,987,073,048,352/310,779,215.12 - Step 6: Final answer
x = 305,577,022.06
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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.