Finding the Fourth Proportional to 425,356,823.80, 638,035,235.70 and 166,486,007.80
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Solution
The fourth proportional to 425,356,823.80, 638,035,235.70 and 166,486,007.80 is: 249,729,011.70
Step by Step Solution
- Step 1: Write the proportion equation
425,356,823.80 : 638,035,235.70 = 166,486,007.80 : x - Step 2: Convert to fraction form
425,356,823.80/638,035,235.70 = 166,486,007.80/x - Step 3: Cross multiply
425,356,823.80x = 638,035,235.70 × 166,486,007.80 - Step 4: Simplify right side
425,356,823.80x = 106,223,939,227,425,056 - Step 5: Solve for x
x = 106,223,939,227,425,056/425,356,823.80 - Step 6: Final answer
x = 249,729,011.70
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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.