Finding the Fourth Proportional to 398,345.11, 549,709.13 and 217,058.60
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Solution
The fourth proportional to 398,345.11, 549,709.13 and 217,058.60 is: 299,536.99
Step by Step Solution
- Step 1: Write the proportion equation
398,345.11 : 549,709.13 = 217,058.60 : x - Step 2: Convert to fraction form
398,345.11/549,709.13 = 217,058.60/x - Step 3: Cross multiply
398,345.11x = 549,709.13 × 217,058.60 - Step 4: Simplify right side
398,345.11x = 119,319,094,165.02 - Step 5: Solve for x
x = 119,319,094,165.02/398,345.11 - Step 6: Final answer
x = 299,536.99
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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.