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Finding the Fourth Proportional to 371,509.34, 512,684.85 and 210,395.75

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Solution

The fourth proportional to 371,509.34, 512,684.85 and 210,395.75 is: 290,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,509.34 : 512,684.85 = 210,395.75 : x
  2. Step 2: Convert to fraction form
    371,509.34/512,684.85 = 210,395.75/x
  3. Step 3: Cross multiply
    371,509.34x = 512,684.85 × 210,395.75
  4. Step 4: Simplify right side
    371,509.34x = 107,866,711,754.95
  5. Step 5: Solve for x
    x = 107,866,711,754.95/371,509.34
  6. Step 6: Final answer
    x = 290,347.24

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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.