Finding the Fourth Proportional to 375,874,065.65, 518,709,750.33 and 210,865,178.09
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Solution
The fourth proportional to 375,874,065.65, 518,709,750.33 and 210,865,178.09 is: 290,995,931.55
Step by Step Solution
- Step 1: Write the proportion equation
375,874,065.65 : 518,709,750.33 = 210,865,178.09 : x - Step 2: Convert to fraction form
375,874,065.65/518,709,750.33 = 210,865,178.09/x - Step 3: Cross multiply
375,874,065.65x = 518,709,750.33 × 210,865,178.09 - Step 4: Simplify right side
375,874,065.65x = 109,377,823,877,761,344 - Step 5: Solve for x
x = 109,377,823,877,761,344/375,874,065.65 - Step 6: Final answer
x = 290,995,931.55
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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.