Finding the Fourth Proportional to 313,359,790.21, 432,440,430.41 and 172,246,417.30
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Solution
The fourth proportional to 313,359,790.21, 432,440,430.41 and 172,246,417.30 is: 237,702,210.56
Step by Step Solution
- Step 1: Write the proportion equation
313,359,790.21 : 432,440,430.41 = 172,246,417.30 : x - Step 2: Convert to fraction form
313,359,790.21/432,440,430.41 = 172,246,417.30/x - Step 3: Cross multiply
313,359,790.21x = 432,440,430.41 × 172,246,417.30 - Step 4: Simplify right side
313,359,790.21x = 74,486,314,833,792,480 - Step 5: Solve for x
x = 74,486,314,833,792,480/313,359,790.21 - Step 6: Final answer
x = 237,702,210.56
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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.