Finding the Fourth Proportional to 390,909,812.24, 586,234,509.24 and 157,680,287.12
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Solution
The fourth proportional to 390,909,812.24, 586,234,509.24 and 157,680,287.12 is: 236,467,908.56
Step by Step Solution
- Step 1: Write the proportion equation
390,909,812.24 : 586,234,509.24 = 157,680,287.12 : x - Step 2: Convert to fraction form
390,909,812.24/586,234,509.24 = 157,680,287.12/x - Step 3: Cross multiply
390,909,812.24x = 586,234,509.24 × 157,680,287.12 - Step 4: Simplify right side
390,909,812.24x = 92,437,625,736,615,504 - Step 5: Solve for x
x = 92,437,625,736,615,504/390,909,812.24 - Step 6: Final answer
x = 236,467,908.56
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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.