Finding the Fourth Proportional to 288,939,779.88, 398,717,266.50 and 158,567,985.96
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Solution
The fourth proportional to 288,939,779.88, 398,717,266.50 and 158,567,985.96 is: 218,813,047.97
Step by Step Solution
- Step 1: Write the proportion equation
288,939,779.88 : 398,717,266.50 = 158,567,985.96 : x - Step 2: Convert to fraction form
288,939,779.88/398,717,266.50 = 158,567,985.96/x - Step 3: Cross multiply
288,939,779.88x = 398,717,266.50 × 158,567,985.96 - Step 4: Simplify right side
288,939,779.88x = 63,223,793,916,381,584 - Step 5: Solve for x
x = 63,223,793,916,381,584/288,939,779.88 - Step 6: Final answer
x = 218,813,047.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.