Finding the Fourth Proportional to 420,888.64, 631,426.25 and 121,345.84
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Solution
The fourth proportional to 420,888.64, 631,426.25 and 121,345.84 is: 182,045.65
Step by Step Solution
- Step 1: Write the proportion equation
420,888.64 : 631,426.25 = 121,345.84 : x - Step 2: Convert to fraction form
420,888.64/631,426.25 = 121,345.84/x - Step 3: Cross multiply
420,888.64x = 631,426.25 × 121,345.84 - Step 4: Simplify right side
420,888.64x = 76,620,948,097.57 - Step 5: Solve for x
x = 76,620,948,097.57/420,888.64 - Step 6: Final answer
x = 182,045.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.