Finding the Fourth Proportional to 351,707,948.80, 527,316,163.20 and 208,026,822.40
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Solution
The fourth proportional to 351,707,948.80, 527,316,163.20 and 208,026,822.40 is: 311,894,872.45
Step by Step Solution
- Step 1: Write the proportion equation
351,707,948.80 : 527,316,163.20 = 208,026,822.40 : x - Step 2: Convert to fraction form
351,707,948.80/527,316,163.20 = 208,026,822.40/x - Step 3: Cross multiply
351,707,948.80x = 527,316,163.20 × 208,026,822.40 - Step 4: Simplify right side
351,707,948.80x = 109,695,905,830,655,824 - Step 5: Solve for x
x = 109,695,905,830,655,824/351,707,948.80 - Step 6: Final answer
x = 311,894,872.45
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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.