Finding the Fourth Proportional to 458,753.12, 688,129.68 and 143,237.06
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Solution
The fourth proportional to 458,753.12, 688,129.68 and 143,237.06 is: 214,855.59
Step by Step Solution
- Step 1: Write the proportion equation
458,753.12 : 688,129.68 = 143,237.06 : x - Step 2: Convert to fraction form
458,753.12/688,129.68 = 143,237.06/x - Step 3: Cross multiply
458,753.12x = 688,129.68 × 143,237.06 - Step 4: Simplify right side
458,753.12x = 98,565,672,261.94 - Step 5: Solve for x
x = 98,565,672,261.94/458,753.12 - Step 6: Final answer
x = 214,855.59
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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.