Finding the Fourth Proportional to 312,013,805.80, 468,020,708.70 and 221,314,541.80
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Solution
The fourth proportional to 312,013,805.80, 468,020,708.70 and 221,314,541.80 is: 331,971,812.70
Step by Step Solution
- Step 1: Write the proportion equation
312,013,805.80 : 468,020,708.70 = 221,314,541.80 : x - Step 2: Convert to fraction form
312,013,805.80/468,020,708.70 = 221,314,541.80/x - Step 3: Cross multiply
312,013,805.80x = 468,020,708.70 × 221,314,541.80 - Step 4: Simplify right side
312,013,805.80x = 103,579,788,698,851,776 - Step 5: Solve for x
x = 103,579,788,698,851,776/312,013,805.80 - Step 6: Final answer
x = 331,971,812.70
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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.