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Finding the Fourth Proportional to 371,478.46, 512,657.49 and 210,312.22

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Solution

The fourth proportional to 371,478.46, 512,657.49 and 210,312.22 is: 290,240.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,478.46 : 512,657.49 = 210,312.22 : x
  2. Step 2: Convert to fraction form
    371,478.46/512,657.49 = 210,312.22/x
  3. Step 3: Cross multiply
    371,478.46x = 512,657.49 × 210,312.22
  4. Step 4: Simplify right side
    371,478.46x = 107,818,134,821.53
  5. Step 5: Solve for x
    x = 107,818,134,821.53/371,478.46
  6. Step 6: Final answer
    x = 290,240.61

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1.5x scale

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.