Finding the Fourth Proportional to 318,885,210.40, 440,061,587.76 and 172,207,481.44
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Solution
The fourth proportional to 318,885,210.40, 440,061,587.76 and 172,207,481.44 is: 237,646,322.99
Step by Step Solution
- Step 1: Write the proportion equation
318,885,210.40 : 440,061,587.76 = 172,207,481.44 : x - Step 2: Convert to fraction form
318,885,210.40/440,061,587.76 = 172,207,481.44/x - Step 3: Cross multiply
318,885,210.40x = 440,061,587.76 × 172,207,481.44 - Step 4: Simplify right side
318,885,210.40x = 75,781,897,706,637,136 - Step 5: Solve for x
x = 75,781,897,706,637,136/318,885,210.40 - Step 6: Final answer
x = 237,646,322.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.