Finding the Fourth Proportional to 280,230,140.16, 420,385,324.68 and 86,157,848.34
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Solution
The fourth proportional to 280,230,140.16, 420,385,324.68 and 86,157,848.34 is: 129,249,105.85
Step by Step Solution
- Step 1: Write the proportion equation
280,230,140.16 : 420,385,324.68 = 86,157,848.34 : x - Step 2: Convert to fraction form
280,230,140.16/420,385,324.68 = 86,157,848.34/x - Step 3: Cross multiply
280,230,140.16x = 420,385,324.68 × 86,157,848.34 - Step 4: Simplify right side
280,230,140.16x = 36,219,495,048,141,104 - Step 5: Solve for x
x = 36,219,495,048,141,104/280,230,140.16 - Step 6: Final answer
x = 129,249,105.85
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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.