Finding the Fourth Proportional to 315,473,418.80, 472,413,865.80 and 207,181,732.40
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Solution
The fourth proportional to 315,473,418.80, 472,413,865.80 and 207,181,732.40 is: 310,249,666.99
Step by Step Solution
- Step 1: Write the proportion equation
315,473,418.80 : 472,413,865.80 = 207,181,732.40 : x - Step 2: Convert to fraction form
315,473,418.80/472,413,865.80 = 207,181,732.40/x - Step 3: Cross multiply
315,473,418.80x = 472,413,865.80 × 207,181,732.40 - Step 4: Simplify right side
315,473,418.80x = 97,875,523,126,225,120 - Step 5: Solve for x
x = 97,875,523,126,225,120/315,473,418.80 - Step 6: Final answer
x = 310,249,666.99
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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.