Finding the Fourth Proportional to 298,368,985.80, 447,553,478.70 and 217,747,417.80
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Solution
The fourth proportional to 298,368,985.80, 447,553,478.70 and 217,747,417.80 is: 326,621,126.70
Step by Step Solution
- Step 1: Write the proportion equation
298,368,985.80 : 447,553,478.70 = 217,747,417.80 : x - Step 2: Convert to fraction form
298,368,985.80/447,553,478.70 = 217,747,417.80/x - Step 3: Cross multiply
298,368,985.80x = 447,553,478.70 × 217,747,417.80 - Step 4: Simplify right side
298,368,985.80x = 97,453,614,314,332,304 - Step 5: Solve for x
x = 97,453,614,314,332,304/298,368,985.80 - Step 6: Final answer
x = 326,621,126.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.