Finding the Fourth Proportional to 304,909,822.56, 420,774,639.12 and 165,681,009.12
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Solution
The fourth proportional to 304,909,822.56, 420,774,639.12 and 165,681,009.12 is: 228,639,294.85
Step by Step Solution
- Step 1: Write the proportion equation
304,909,822.56 : 420,774,639.12 = 165,681,009.12 : x - Step 2: Convert to fraction form
304,909,822.56/420,774,639.12 = 165,681,009.12/x - Step 3: Cross multiply
304,909,822.56x = 420,774,639.12 × 165,681,009.12 - Step 4: Simplify right side
304,909,822.56x = 69,714,366,821,505,432 - Step 5: Solve for x
x = 69,714,366,821,505,432/304,909,822.56 - Step 6: Final answer
x = 228,639,294.85
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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.