Finding the Fourth Proportional to 253,973,957.90, 380,920,125.80 and 69,698,387.66
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Solution
The fourth proportional to 253,973,957.90, 380,920,125.80 and 69,698,387.66 is: 104,536,381.66
Step by Step Solution
- Step 1: Write the proportion equation
253,973,957.90 : 380,920,125.80 = 69,698,387.66 : x - Step 2: Convert to fraction form
253,973,957.90/380,920,125.80 = 69,698,387.66/x - Step 3: Cross multiply
253,973,957.90x = 380,920,125.80 × 69,698,387.66 - Step 4: Simplify right side
253,973,957.90x = 26,549,518,593,774,016 - Step 5: Solve for x
x = 26,549,518,593,774,016/253,973,957.90 - Step 6: Final answer
x = 104,536,381.66
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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.