Finding the Fourth Proportional to 442,866,217.40, 664,299,326.10 and 212,779,820.60
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Solution
The fourth proportional to 442,866,217.40, 664,299,326.10 and 212,779,820.60 is: 319,169,730.90
Step by Step Solution
- Step 1: Write the proportion equation
442,866,217.40 : 664,299,326.10 = 212,779,820.60 : x - Step 2: Convert to fraction form
442,866,217.40/664,299,326.10 = 212,779,820.60/x - Step 3: Cross multiply
442,866,217.40x = 664,299,326.10 × 212,779,820.60 - Step 4: Simplify right side
442,866,217.40x = 141,349,491,432,258,896 - Step 5: Solve for x
x = 141,349,491,432,258,896/442,866,217.40 - Step 6: Final answer
x = 319,169,730.90
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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.