Finding the Fourth Proportional to 399,219.09, 549,523.99 and 348,141.71
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Solution
The fourth proportional to 399,219.09, 549,523.99 and 348,141.71 is: 479,216.11
Step by Step Solution
- Step 1: Write the proportion equation
399,219.09 : 549,523.99 = 348,141.71 : x - Step 2: Convert to fraction form
399,219.09/549,523.99 = 348,141.71/x - Step 3: Cross multiply
399,219.09x = 549,523.99 × 348,141.71 - Step 4: Simplify right side
399,219.09x = 191,312,220,810.52 - Step 5: Solve for x
x = 191,312,220,810.52/399,219.09 - Step 6: Final answer
x = 479,216.11
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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.