Finding the Fourth Proportional to 354,432.74, 489,155.11 and 216,692.49
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Solution
The fourth proportional to 354,432.74, 489,155.11 and 216,692.49 is: 299,058.83
Step by Step Solution
- Step 1: Write the proportion equation
354,432.74 : 489,155.11 = 216,692.49 : x - Step 2: Convert to fraction form
354,432.74/489,155.11 = 216,692.49/x - Step 3: Cross multiply
354,432.74x = 489,155.11 × 216,692.49 - Step 4: Simplify right side
354,432.74x = 105,996,238,782.12 - Step 5: Solve for x
x = 105,996,238,782.12/354,432.74 - Step 6: Final answer
x = 299,058.83
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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.