Finding the Fourth Proportional to 258,112,309.12, 356,195,037.26 and 140,637,639.02
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Solution
The fourth proportional to 258,112,309.12, 356,195,037.26 and 140,637,639.02 is: 194,079,969.45
Step by Step Solution
- Step 1: Write the proportion equation
258,112,309.12 : 356,195,037.26 = 140,637,639.02 : x - Step 2: Convert to fraction form
258,112,309.12/356,195,037.26 = 140,637,639.02/x - Step 3: Cross multiply
258,112,309.12x = 356,195,037.26 × 140,637,639.02 - Step 4: Simplify right side
258,112,309.12x = 50,094,429,069,457,944 - Step 5: Solve for x
x = 50,094,429,069,457,944/258,112,309.12 - Step 6: Final answer
x = 194,079,969.45
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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.