Finding the Fourth Proportional to 358,181,621.20, 537,139,721.40 and 115,852,430.80
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Solution
The fourth proportional to 358,181,621.20, 537,139,721.40 and 115,852,430.80 is: 173,735,721.55
Step by Step Solution
- Step 1: Write the proportion equation
358,181,621.20 : 537,139,721.40 = 115,852,430.80 : x - Step 2: Convert to fraction form
358,181,621.20/537,139,721.40 = 115,852,430.80/x - Step 3: Cross multiply
358,181,621.20x = 537,139,721.40 × 115,852,430.80 - Step 4: Simplify right side
358,181,621.20x = 62,228,942,403,424,776 - Step 5: Solve for x
x = 62,228,942,403,424,776/358,181,621.20 - Step 6: Final answer
x = 173,735,721.55
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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.