Finding the Fourth Proportional to 286,038.08, 429,126.47 and 86,346.53
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Solution
The fourth proportional to 286,038.08, 429,126.47 and 86,346.53 is: 129,540.72
Step by Step Solution
- Step 1: Write the proportion equation
286,038.08 : 429,126.47 = 86,346.53 : x - Step 2: Convert to fraction form
286,038.08/429,126.47 = 86,346.53/x - Step 3: Cross multiply
286,038.08x = 429,126.47 × 86,346.53 - Step 4: Simplify right side
286,038.08x = 37,053,579,038.28 - Step 5: Solve for x
x = 37,053,579,038.28/286,038.08 - Step 6: Final answer
x = 129,540.72
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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.