Finding the Fourth Proportional to 239,478,347,053.64, 330,457,512,521.88 and 143,115,248,903.24
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Solution
The fourth proportional to 239,478,347,053.64, 330,457,512,521.88 and 143,115,248,903.24 is: 197,485,533,612.45
Step by Step Solution
- Step 1: Write the proportion equation
239,478,347,053.64 : 330,457,512,521.88 = 143,115,248,903.24 : x - Step 2: Convert to fraction form
239,478,347,053.64/330,457,512,521.88 = 143,115,248,903.24/x - Step 3: Cross multiply
239,478,347,053.64x = 330,457,512,521.88 × 143,115,248,903.24 - Step 4: Simplify right side
239,478,347,053.64x = 47,293,509,156,514,404,761,600 - Step 5: Solve for x
x = 47,293,509,156,514,404,761,600/239,478,347,053.64 - Step 6: Final answer
x = 197,485,533,612.45
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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.