Finding the Fourth Proportional to 211,013,065.80, 316,519,598.70 and 130,391,497.80
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Solution
The fourth proportional to 211,013,065.80, 316,519,598.70 and 130,391,497.80 is: 195,587,246.70
Step by Step Solution
- Step 1: Write the proportion equation
211,013,065.80 : 316,519,598.70 = 130,391,497.80 : x - Step 2: Convert to fraction form
211,013,065.80/316,519,598.70 = 130,391,497.80/x - Step 3: Cross multiply
211,013,065.80x = 316,519,598.70 × 130,391,497.80 - Step 4: Simplify right side
211,013,065.80x = 41,271,464,557,547,928 - Step 5: Solve for x
x = 41,271,464,557,547,928/211,013,065.80 - Step 6: Final answer
x = 195,587,246.70
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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.