Finding the Fourth Proportional to 288,555.06, 432,854.35 and 86,135.18
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Solution
The fourth proportional to 288,555.06, 432,854.35 and 86,135.18 is: 129,209.27
Step by Step Solution
- Step 1: Write the proportion equation
288,555.06 : 432,854.35 = 86,135.18 : x - Step 2: Convert to fraction form
288,555.06/432,854.35 = 86,135.18/x - Step 3: Cross multiply
288,555.06x = 432,854.35 × 86,135.18 - Step 4: Simplify right side
288,555.06x = 37,283,987,890.74 - Step 5: Solve for x
x = 37,283,987,890.74/288,555.06 - Step 6: Final answer
x = 129,209.27
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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.