Finding the Fourth Proportional to 260,138,358.78, 390,207,706.65 and 66,064,328.70
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Solution
The fourth proportional to 260,138,358.78, 390,207,706.65 and 66,064,328.70 is: 99,096,535.84
Step by Step Solution
- Step 1: Write the proportion equation
260,138,358.78 : 390,207,706.65 = 66,064,328.70 : x - Step 2: Convert to fraction form
260,138,358.78/390,207,706.65 = 66,064,328.70/x - Step 3: Cross multiply
260,138,358.78x = 390,207,706.65 × 66,064,328.70 - Step 4: Simplify right side
260,138,358.78x = 25,778,810,193,398,776 - Step 5: Solve for x
x = 25,778,810,193,398,776/260,138,358.78 - Step 6: Final answer
x = 99,096,535.84
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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.