Finding the Fourth Proportional to 391,066.21, 539,392.58 and 358,904.49
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Solution
The fourth proportional to 391,066.21, 539,392.58 and 358,904.49 is: 495,032.34
Step by Step Solution
- Step 1: Write the proportion equation
391,066.21 : 539,392.58 = 358,904.49 : x - Step 2: Convert to fraction form
391,066.21/539,392.58 = 358,904.49/x - Step 3: Cross multiply
391,066.21x = 539,392.58 × 358,904.49 - Step 4: Simplify right side
391,066.21x = 193,590,417,040.16 - Step 5: Solve for x
x = 193,590,417,040.16/391,066.21 - Step 6: Final answer
x = 495,032.34
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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.