Finding the Fourth Proportional to 278,058,326.90, 417,087,490.35 and 213,687,043.70
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Solution
The fourth proportional to 278,058,326.90, 417,087,490.35 and 213,687,043.70 is: 320,530,565.55
Step by Step Solution
- Step 1: Write the proportion equation
278,058,326.90 : 417,087,490.35 = 213,687,043.70 : x - Step 2: Convert to fraction form
278,058,326.90/417,087,490.35 = 213,687,043.70/x - Step 3: Cross multiply
278,058,326.90x = 417,087,490.35 × 213,687,043.70 - Step 4: Simplify right side
278,058,326.90x = 89,126,192,777,143,776 - Step 5: Solve for x
x = 89,126,192,777,143,776/278,058,326.90 - Step 6: Final answer
x = 320,530,565.55
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1.5x scale
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.