Finding the Fourth Proportional to 420,430.79, 630,271.11 and 154,129.12
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Solution
The fourth proportional to 420,430.79, 630,271.11 and 154,129.12 is: 231,056.17
Step by Step Solution
- Step 1: Write the proportion equation
420,430.79 : 630,271.11 = 154,129.12 : x - Step 2: Convert to fraction form
420,430.79/630,271.11 = 154,129.12/x - Step 3: Cross multiply
420,430.79x = 630,271.11 × 154,129.12 - Step 4: Simplify right side
420,430.79x = 97,143,128,394.37 - Step 5: Solve for x
x = 97,143,128,394.37/420,430.79 - Step 6: Final answer
x = 231,056.17
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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.