Finding the Fourth Proportional to 291,226,465.30, 436,839,697.95 and 138,171,457.30
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Solution
The fourth proportional to 291,226,465.30, 436,839,697.95 and 138,171,457.30 is: 207,257,185.95
Step by Step Solution
- Step 1: Write the proportion equation
291,226,465.30 : 436,839,697.95 = 138,171,457.30 : x - Step 2: Convert to fraction form
291,226,465.30/436,839,697.95 = 138,171,457.30/x - Step 3: Cross multiply
291,226,465.30x = 436,839,697.95 × 138,171,457.30 - Step 4: Simplify right side
291,226,465.30x = 60,358,777,672,243,328 - Step 5: Solve for x
x = 60,358,777,672,243,328/291,226,465.30 - Step 6: Final answer
x = 207,257,185.95
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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.