Finding the Fourth Proportional to 260,603,455.02, 390,953,239.30 and 85,736,330.70
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Solution
The fourth proportional to 260,603,455.02, 390,953,239.30 and 85,736,330.70 is: 128,620,306.32
Step by Step Solution
- Step 1: Write the proportion equation
260,603,455.02 : 390,953,239.30 = 85,736,330.70 : x - Step 2: Convert to fraction form
260,603,455.02/390,953,239.30 = 85,736,330.70/x - Step 3: Cross multiply
260,603,455.02x = 390,953,239.30 × 85,736,330.70 - Step 4: Simplify right side
260,603,455.02x = 33,518,896,212,861,040 - Step 5: Solve for x
x = 33,518,896,212,861,040/260,603,455.02 - Step 6: Final answer
x = 128,620,306.32
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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.