Finding the Fourth Proportional to 266,779,921.20, 400,169,881.80 and 221,430,289.20
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Solution
The fourth proportional to 266,779,921.20, 400,169,881.80 and 221,430,289.20 is: 332,145,433.80
Step by Step Solution
- Step 1: Write the proportion equation
266,779,921.20 : 400,169,881.80 = 221,430,289.20 : x - Step 2: Convert to fraction form
266,779,921.20/400,169,881.80 = 221,430,289.20/x - Step 3: Cross multiply
266,779,921.20x = 400,169,881.80 × 221,430,289.20 - Step 4: Simplify right side
266,779,921.20x = 88,609,732,656,103,808 - Step 5: Solve for x
x = 88,609,732,656,103,808/266,779,921.20 - Step 6: Final answer
x = 332,145,433.80
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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.