Finding the Fourth Proportional to 310,748.14, 429,254.56 and 243,612.70
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Solution
The fourth proportional to 310,748.14, 429,254.56 and 243,612.70 is: 336,516.46
Step by Step Solution
- Step 1: Write the proportion equation
310,748.14 : 429,254.56 = 243,612.70 : x - Step 2: Convert to fraction form
310,748.14/429,254.56 = 243,612.70/x - Step 3: Cross multiply
310,748.14x = 429,254.56 × 243,612.70 - Step 4: Simplify right side
310,748.14x = 104,571,862,203.99 - Step 5: Solve for x
x = 104,571,862,203.99/310,748.14 - Step 6: Final answer
x = 336,516.46
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1.5x scale
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.