Finding the Fourth Proportional to 291,948.42, 402,888.60 and 157,812.42
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Solution
The fourth proportional to 291,948.42, 402,888.60 and 157,812.42 is: 217,781.02
Step by Step Solution
- Step 1: Write the proportion equation
291,948.42 : 402,888.60 = 157,812.42 : x - Step 2: Convert to fraction form
291,948.42/402,888.60 = 157,812.42/x - Step 3: Cross multiply
291,948.42x = 402,888.60 × 157,812.42 - Step 4: Simplify right side
291,948.42x = 63,580,824,956.41 - Step 5: Solve for x
x = 63,580,824,956.41/291,948.42 - Step 6: Final answer
x = 217,781.02
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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.