Finding the Fourth Proportional to 266,779,979.70, 400,169,969.55 and 221,430,347.70
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Solution
The fourth proportional to 266,779,979.70, 400,169,969.55 and 221,430,347.70 is: 332,145,521.55
Step by Step Solution
- Step 1: Write the proportion equation
266,779,979.70 : 400,169,969.55 = 221,430,347.70 : x - Step 2: Convert to fraction form
266,779,979.70/400,169,969.55 = 221,430,347.70/x - Step 3: Cross multiply
266,779,979.70x = 400,169,969.55 × 221,430,347.70 - Step 4: Simplify right side
266,779,979.70x = 88,609,775,496,554,912 - Step 5: Solve for x
x = 88,609,775,496,554,912/266,779,979.70 - Step 6: Final answer
x = 332,145,521.55
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1.5x scale
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.