Finding the Fourth Proportional to 309,619,587.37, 427,275,101.00 and 170,390,349.14
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Solution
The fourth proportional to 309,619,587.37, 427,275,101.00 and 170,390,349.14 is: 235,138,720.56
Step by Step Solution
- Step 1: Write the proportion equation
309,619,587.37 : 427,275,101.00 = 170,390,349.14 : x - Step 2: Convert to fraction form
309,619,587.37/427,275,101.00 = 170,390,349.14/x - Step 3: Cross multiply
309,619,587.37x = 427,275,101.00 × 170,390,349.14 - Step 4: Simplify right side
309,619,587.37x = 72,803,553,635,230,432 - Step 5: Solve for x
x = 72,803,553,635,230,432/309,619,587.37 - Step 6: Final answer
x = 235,138,720.56
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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.