Finding the Fourth Proportional to 357,438,464.68, 493,305,022.64 and 216,387,402.16
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Solution
The fourth proportional to 357,438,464.68, 493,305,022.64 and 216,387,402.16 is: 298,638,794.84
Step by Step Solution
- Step 1: Write the proportion equation
357,438,464.68 : 493,305,022.64 = 216,387,402.16 : x - Step 2: Convert to fraction form
357,438,464.68/493,305,022.64 = 216,387,402.16/x - Step 3: Cross multiply
357,438,464.68x = 493,305,022.64 × 216,387,402.16 - Step 4: Simplify right side
357,438,464.68x = 106,744,992,321,549,584 - Step 5: Solve for x
x = 106,744,992,321,549,584/357,438,464.68 - Step 6: Final answer
x = 298,638,794.84
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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.