Finding the Fourth Proportional to 245,423,334.72, 338,683,966.21 and 135,415,053.12
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Solution
The fourth proportional to 245,423,334.72, 338,683,966.21 and 135,415,053.12 is: 186,872,643.25
Step by Step Solution
- Step 1: Write the proportion equation
245,423,334.72 : 338,683,966.21 = 135,415,053.12 : x - Step 2: Convert to fraction form
245,423,334.72/338,683,966.21 = 135,415,053.12/x - Step 3: Cross multiply
245,423,334.72x = 338,683,966.21 × 135,415,053.12 - Step 4: Simplify right side
245,423,334.72x = 45,862,907,275,219,432 - Step 5: Solve for x
x = 45,862,907,275,219,432/245,423,334.72 - Step 6: Final answer
x = 186,872,643.25
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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.