Finding the Fourth Proportional to 219,398.02, 302,801.58 and 128,803.95
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Solution
The fourth proportional to 219,398.02, 302,801.58 and 128,803.95 is: 177,768.42
Step by Step Solution
- Step 1: Write the proportion equation
219,398.02 : 302,801.58 = 128,803.95 : x - Step 2: Convert to fraction form
219,398.02/302,801.58 = 128,803.95/x - Step 3: Cross multiply
219,398.02x = 302,801.58 × 128,803.95 - Step 4: Simplify right side
219,398.02x = 39,002,039,570.24 - Step 5: Solve for x
x = 39,002,039,570.24/219,398.02 - Step 6: Final answer
x = 177,768.42
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1.5x scale
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.