Finding the Fourth Proportional to 420,985.08, 631,468.56 and 136,675.08
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Solution
The fourth proportional to 420,985.08, 631,468.56 and 136,675.08 is: 205,009.68
Step by Step Solution
- Step 1: Write the proportion equation
420,985.08 : 631,468.56 = 136,675.08 : x - Step 2: Convert to fraction form
420,985.08/631,468.56 = 136,675.08/x - Step 3: Cross multiply
420,985.08x = 631,468.56 × 136,675.08 - Step 4: Simplify right side
420,985.08x = 86,306,015,955.48 - Step 5: Solve for x
x = 86,306,015,955.48/420,985.08 - Step 6: Final answer
x = 205,009.68
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.