Finding the Fourth Proportional to 266,779,981.70, 400,169,972.55 and 221,430,349.70
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Solution
The fourth proportional to 266,779,981.70, 400,169,972.55 and 221,430,349.70 is: 332,145,524.55
Step by Step Solution
- Step 1: Write the proportion equation
266,779,981.70 : 400,169,972.55 = 221,430,349.70 : x - Step 2: Convert to fraction form
266,779,981.70/400,169,972.55 = 221,430,349.70/x - Step 3: Cross multiply
266,779,981.70x = 400,169,972.55 × 221,430,349.70 - Step 4: Simplify right side
266,779,981.70x = 88,609,776,961,185,904 - Step 5: Solve for x
x = 88,609,776,961,185,904/266,779,981.70 - Step 6: Final answer
x = 332,145,524.55
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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.