Finding the Fourth Proportional to 390,718.99, 586,055.80 and 150,785.95
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Solution
The fourth proportional to 390,718.99, 586,055.80 and 150,785.95 is: 226,170.17
Step by Step Solution
- Step 1: Write the proportion equation
390,718.99 : 586,055.80 = 150,785.95 : x - Step 2: Convert to fraction form
390,718.99/586,055.80 = 150,785.95/x - Step 3: Cross multiply
390,718.99x = 586,055.80 × 150,785.95 - Step 4: Simplify right side
390,718.99x = 88,368,980,556.01 - Step 5: Solve for x
x = 88,368,980,556.01/390,718.99 - Step 6: Final answer
x = 226,170.17
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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.