Finding the Fourth Proportional to 236,988,990.12, 355,391,581.50 and 81,513,235.56
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Solution
The fourth proportional to 236,988,990.12, 355,391,581.50 and 81,513,235.56 is: 122,238,242.73
Step by Step Solution
- Step 1: Write the proportion equation
236,988,990.12 : 355,391,581.50 = 81,513,235.56 : x - Step 2: Convert to fraction form
236,988,990.12/355,391,581.50 = 81,513,235.56/x - Step 3: Cross multiply
236,988,990.12x = 355,391,581.50 × 81,513,235.56 - Step 4: Simplify right side
236,988,990.12x = 28,969,117,698,850,440 - Step 5: Solve for x
x = 28,969,117,698,850,440/236,988,990.12 - Step 6: Final answer
x = 122,238,242.73
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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.