Finding the Fourth Proportional to 352,357,645.80, 528,536,468.70 and 261,658,381.80
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Solution
The fourth proportional to 352,357,645.80, 528,536,468.70 and 261,658,381.80 is: 392,487,572.70
Step by Step Solution
- Step 1: Write the proportion equation
352,357,645.80 : 528,536,468.70 = 261,658,381.80 : x - Step 2: Convert to fraction form
352,357,645.80/528,536,468.70 = 261,658,381.80/x - Step 3: Cross multiply
352,357,645.80x = 528,536,468.70 × 261,658,381.80 - Step 4: Simplify right side
352,357,645.80x = 138,295,997,122,328,352 - Step 5: Solve for x
x = 138,295,997,122,328,352/352,357,645.80 - Step 6: Final answer
x = 392,487,572.70
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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.