Finding the Fourth Proportional to 310,642,923.12, 428,696,330.10 and 169,523,236.76
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Solution
The fourth proportional to 310,642,923.12, 428,696,330.10 and 169,523,236.76 is: 233,947,030.68
Step by Step Solution
- Step 1: Write the proportion equation
310,642,923.12 : 428,696,330.10 = 169,523,236.76 : x - Step 2: Convert to fraction form
310,642,923.12/428,696,330.10 = 169,523,236.76/x - Step 3: Cross multiply
310,642,923.12x = 428,696,330.10 × 169,523,236.76 - Step 4: Simplify right side
310,642,923.12x = 72,673,989,465,685,408 - Step 5: Solve for x
x = 72,673,989,465,685,408/310,642,923.12 - Step 6: Final answer
x = 233,947,030.68
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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.