Finding the Fourth Proportional to 315,473,416.80, 472,413,862.80 and 207,181,730.40
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Solution
The fourth proportional to 315,473,416.80, 472,413,862.80 and 207,181,730.40 is: 310,249,663.99
Step by Step Solution
- Step 1: Write the proportion equation
315,473,416.80 : 472,413,862.80 = 207,181,730.40 : x - Step 2: Convert to fraction form
315,473,416.80/472,413,862.80 = 207,181,730.40/x - Step 3: Cross multiply
315,473,416.80x = 472,413,862.80 × 207,181,730.40 - Step 4: Simplify right side
315,473,416.80x = 97,875,521,559,852,192 - Step 5: Solve for x
x = 97,875,521,559,852,192/315,473,416.80 - Step 6: Final answer
x = 310,249,663.99
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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.