Finding the Fourth Proportional to 278,122,985.64, 383,857,220.70 and 160,627,197.96
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Solution
The fourth proportional to 278,122,985.64, 383,857,220.70 and 160,627,197.96 is: 221,692,966.64
Step by Step Solution
- Step 1: Write the proportion equation
278,122,985.64 : 383,857,220.70 = 160,627,197.96 : x - Step 2: Convert to fraction form
278,122,985.64/383,857,220.70 = 160,627,197.96/x - Step 3: Cross multiply
278,122,985.64x = 383,857,220.70 × 160,627,197.96 - Step 4: Simplify right side
278,122,985.64x = 61,657,909,777,754,312 - Step 5: Solve for x
x = 61,657,909,777,754,312/278,122,985.64 - Step 6: Final answer
x = 221,692,966.64
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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.