Finding the Fourth Proportional to 260,010,901.80, 390,016,352.70 and 87,430,357.80
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Solution
The fourth proportional to 260,010,901.80, 390,016,352.70 and 87,430,357.80 is: 131,145,536.70
Step by Step Solution
- Step 1: Write the proportion equation
260,010,901.80 : 390,016,352.70 = 87,430,357.80 : x - Step 2: Convert to fraction form
260,010,901.80/390,016,352.70 = 87,430,357.80/x - Step 3: Cross multiply
260,010,901.80x = 390,016,352.70 × 87,430,357.80 - Step 4: Simplify right side
260,010,901.80x = 34,099,269,264,411,992 - Step 5: Solve for x
x = 34,099,269,264,411,992/260,010,901.80 - Step 6: Final answer
x = 131,145,536.70
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1.5x scale
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.