Finding the Fourth Proportional to 389,342,317.68, 537,292,358.46 and 213,130,432.44
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Solution
The fourth proportional to 389,342,317.68, 537,292,358.46 and 213,130,432.44 is: 294,119,974.90
Step by Step Solution
- Step 1: Write the proportion equation
389,342,317.68 : 537,292,358.46 = 213,130,432.44 : x - Step 2: Convert to fraction form
389,342,317.68/537,292,358.46 = 213,130,432.44/x - Step 3: Cross multiply
389,342,317.68x = 537,292,358.46 × 213,130,432.44 - Step 4: Simplify right side
389,342,317.68x = 114,513,352,705,287,296 - Step 5: Solve for x
x = 114,513,352,705,287,296/389,342,317.68 - Step 6: Final answer
x = 294,119,974.90
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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.