Finding the Fourth Proportional to 291,959.66, 402,909.58 and 171,135.20
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Solution
The fourth proportional to 291,959.66, 402,909.58 and 171,135.20 is: 236,169.65
Step by Step Solution
- Step 1: Write the proportion equation
291,959.66 : 402,909.58 = 171,135.20 : x - Step 2: Convert to fraction form
291,959.66/402,909.58 = 171,135.20/x - Step 3: Cross multiply
291,959.66x = 402,909.58 × 171,135.20 - Step 4: Simplify right side
291,959.66x = 68,952,009,547.41 - Step 5: Solve for x
x = 68,952,009,547.41/291,959.66 - Step 6: Final answer
x = 236,169.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.