Finding the Fourth Proportional to 210,369,417.96, 290,338,636.20 and 121,059,526.71
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Solution
The fourth proportional to 210,369,417.96, 290,338,636.20 and 121,059,526.71 is: 167,078,742.84
Step by Step Solution
- Step 1: Write the proportion equation
210,369,417.96 : 290,338,636.20 = 121,059,526.71 : x - Step 2: Convert to fraction form
210,369,417.96/290,338,636.20 = 121,059,526.71/x - Step 3: Cross multiply
210,369,417.96x = 290,338,636.20 × 121,059,526.71 - Step 4: Simplify right side
210,369,417.96x = 35,148,257,883,998,868 - Step 5: Solve for x
x = 35,148,257,883,998,868/210,369,417.96 - Step 6: Final answer
x = 167,078,742.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.