Finding the Fourth Proportional to 291,643.80, 402,468.36 and 157,507.80
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Solution
The fourth proportional to 291,643.80, 402,468.36 and 157,507.80 is: 217,360.72
Step by Step Solution
- Step 1: Write the proportion equation
291,643.80 : 402,468.36 = 157,507.80 : x - Step 2: Convert to fraction form
291,643.80/402,468.36 = 157,507.80/x - Step 3: Cross multiply
291,643.80x = 402,468.36 × 157,507.80 - Step 4: Simplify right side
291,643.80x = 63,391,905,953.21 - Step 5: Solve for x
x = 63,391,905,953.21/291,643.80 - Step 6: Final answer
x = 217,360.72
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1.5x scale
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.