Finding the Fourth Proportional to 268,271,996.40, 402,370,669.80 and 86,537,545.20
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Solution
The fourth proportional to 268,271,996.40, 402,370,669.80 and 86,537,545.20 is: 129,794,277.79
Step by Step Solution
- Step 1: Write the proportion equation
268,271,996.40 : 402,370,669.80 = 86,537,545.20 : x - Step 2: Convert to fraction form
268,271,996.40/402,370,669.80 = 86,537,545.20/x - Step 3: Cross multiply
268,271,996.40x = 402,370,669.80 × 86,537,545.20 - Step 4: Simplify right side
268,271,996.40x = 34,820,170,024,971,776 - Step 5: Solve for x
x = 34,820,170,024,971,776/268,271,996.40 - Step 6: Final answer
x = 129,794,277.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.