Finding the Fourth Proportional to 442,955,207.90, 664,432,811.85 and 212,868,811.10
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Solution
The fourth proportional to 442,955,207.90, 664,432,811.85 and 212,868,811.10 is: 319,303,216.65
Step by Step Solution
- Step 1: Write the proportion equation
442,955,207.90 : 664,432,811.85 = 212,868,811.10 : x - Step 2: Convert to fraction form
442,955,207.90/664,432,811.85 = 212,868,811.10/x - Step 3: Cross multiply
442,955,207.90x = 664,432,811.85 × 212,868,811.10 - Step 4: Simplify right side
442,955,207.90x = 141,437,022,714,339,488 - Step 5: Solve for x
x = 141,437,022,714,339,488/442,955,207.90 - Step 6: Final answer
x = 319,303,216.65
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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.