Finding the Fourth Proportional to 288,276.80, 432,415.20 and 260,283.20
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Solution
The fourth proportional to 288,276.80, 432,415.20 and 260,283.20 is: 390,424.80
Step by Step Solution
- Step 1: Write the proportion equation
288,276.80 : 432,415.20 = 260,283.20 : x - Step 2: Convert to fraction form
288,276.80/432,415.20 = 260,283.20/x - Step 3: Cross multiply
288,276.80x = 432,415.20 × 260,283.20 - Step 4: Simplify right side
288,276.80x = 112,550,411,984.64 - Step 5: Solve for x
x = 112,550,411,984.64/288,276.80 - Step 6: Final answer
x = 390,424.80
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1.5x scale
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.