Finding the Fourth Proportional to 745,417.65, 1,118,136.20 and 212,956.05
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Solution
The fourth proportional to 745,417.65, 1,118,136.20 and 212,956.05 is: 319,436.85
Step by Step Solution
- Step 1: Write the proportion equation
745,417.65 : 1,118,136.20 = 212,956.05 : x - Step 2: Convert to fraction form
745,417.65/1,118,136.20 = 212,956.05/x - Step 3: Cross multiply
745,417.65x = 1,118,136.20 × 212,956.05 - Step 4: Simplify right side
745,417.65x = 238,113,867,449.23 - Step 5: Solve for x
x = 238,113,867,449.23/745,417.65 - Step 6: Final answer
x = 319,436.85
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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.