Finding the Fourth Proportional to 249,939,649.17, 344,890,457.69 and 138,427,568.73
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Solution
The fourth proportional to 249,939,649.17, 344,890,457.69 and 138,427,568.73 is: 191,015,501.92
Step by Step Solution
- Step 1: Write the proportion equation
249,939,649.17 : 344,890,457.69 = 138,427,568.73 : x - Step 2: Convert to fraction form
249,939,649.17/344,890,457.69 = 138,427,568.73/x - Step 3: Cross multiply
249,939,649.17x = 344,890,457.69 × 138,427,568.73 - Step 4: Simplify right side
249,939,649.17x = 47,742,347,535,511,488 - Step 5: Solve for x
x = 47,742,347,535,511,488/249,939,649.17 - Step 6: Final answer
x = 191,015,501.92
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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.