Finding the Fourth Proportional to 310,334,306.28, 427,913,417.63 and 253,643,127.05
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Solution
The fourth proportional to 310,334,306.28, 427,913,417.63 and 253,643,127.05 is: 349,743,148.45
Step by Step Solution
- Step 1: Write the proportion equation
310,334,306.28 : 427,913,417.63 = 253,643,127.05 : x - Step 2: Convert to fraction form
310,334,306.28/427,913,417.63 = 253,643,127.05/x - Step 3: Cross multiply
310,334,306.28x = 427,913,417.63 × 253,643,127.05 - Step 4: Simplify right side
310,334,306.28x = 108,537,297,350,918,016 - Step 5: Solve for x
x = 108,537,297,350,918,016/310,334,306.28 - Step 6: Final answer
x = 349,743,148.45
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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.