Finding the Fourth Proportional to 390,267.36, 585,134.68 and 207,925.44
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Solution
The fourth proportional to 390,267.36, 585,134.68 and 207,925.44 is: 311,746.25
Step by Step Solution
- Step 1: Write the proportion equation
390,267.36 : 585,134.68 = 207,925.44 : x - Step 2: Convert to fraction form
390,267.36/585,134.68 = 207,925.44/x - Step 3: Cross multiply
390,267.36x = 585,134.68 × 207,925.44 - Step 4: Simplify right side
390,267.36x = 121,664,385,798.26 - Step 5: Solve for x
x = 121,664,385,798.26/390,267.36 - Step 6: Final answer
x = 311,746.25
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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.